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Finding the Fourth Proportional to 458,672.10, 688,008.15 and 121,712.10

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Solution

The fourth proportional to 458,672.10, 688,008.15 and 121,712.10 is: 182,568.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,672.10 : 688,008.15 = 121,712.10 : x
  2. Step 2: Convert to fraction form
    458,672.10/688,008.15 = 121,712.10/x
  3. Step 3: Cross multiply
    458,672.10x = 688,008.15 × 121,712.10
  4. Step 4: Simplify right side
    458,672.10x = 83,738,916,753.62
  5. Step 5: Solve for x
    x = 83,738,916,753.62/458,672.10
  6. Step 6: Final answer
    x = 182,568.15

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Similar ratio
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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.