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Finding the Fourth Proportional to 657,544.60, 986,316.90 and 214,312.60

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Solution

The fourth proportional to 657,544.60, 986,316.90 and 214,312.60 is: 321,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,544.60 : 986,316.90 = 214,312.60 : x
  2. Step 2: Convert to fraction form
    657,544.60/986,316.90 = 214,312.60/x
  3. Step 3: Cross multiply
    657,544.60x = 986,316.90 × 214,312.60
  4. Step 4: Simplify right side
    657,544.60x = 211,380,139,262.94
  5. Step 5: Solve for x
    x = 211,380,139,262.94/657,544.60
  6. Step 6: Final answer
    x = 321,468.90

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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.