Home / 651,435.20-977,152.80-208,203.20

Finding the Fourth Proportional to 651,435.20, 977,152.80 and 208,203.20

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Solution

The fourth proportional to 651,435.20, 977,152.80 and 208,203.20 is: 312,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,435.20 : 977,152.80 = 208,203.20 : x
  2. Step 2: Convert to fraction form
    651,435.20/977,152.80 = 208,203.20/x
  3. Step 3: Cross multiply
    651,435.20x = 977,152.80 × 208,203.20
  4. Step 4: Simplify right side
    651,435.20x = 203,446,339,848.96
  5. Step 5: Solve for x
    x = 203,446,339,848.96/651,435.20
  6. Step 6: Final answer
    x = 312,304.80

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Double scale
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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.