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Finding the Fourth Proportional to 459,256.60, 687,656.10 and 292,139.80

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Solution

The fourth proportional to 459,256.60, 687,656.10 and 292,139.80 is: 437,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,256.60 : 687,656.10 = 292,139.80 : x
  2. Step 2: Convert to fraction form
    459,256.60/687,656.10 = 292,139.80/x
  3. Step 3: Cross multiply
    459,256.60x = 687,656.10 × 292,139.80
  4. Step 4: Simplify right side
    459,256.60x = 200,891,715,522.78
  5. Step 5: Solve for x
    x = 200,891,715,522.78/459,256.60
  6. Step 6: Final answer
    x = 437,428.04

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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.