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Finding the Fourth Proportional to 651,437.70, 977,156.55 and 208,205.70

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Solution

The fourth proportional to 651,437.70, 977,156.55 and 208,205.70 is: 312,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,437.70 : 977,156.55 = 208,205.70 : x
  2. Step 2: Convert to fraction form
    651,437.70/977,156.55 = 208,205.70/x
  3. Step 3: Cross multiply
    651,437.70x = 977,156.55 × 208,205.70
  4. Step 4: Simplify right side
    651,437.70x = 203,449,563,502.34
  5. Step 5: Solve for x
    x = 203,449,563,502.34/651,437.70
  6. Step 6: Final answer
    x = 312,308.55

Related Problems

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Half scale
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Double scale
Find fourth proportional to 651,438.70, 977,158.05 and 208,206.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.