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Finding the Fourth Proportional to 459,149.60, 687,363.60 and 341,343.20

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Solution

The fourth proportional to 459,149.60, 687,363.60 and 341,343.20 is: 511,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,149.60 : 687,363.60 = 341,343.20 : x
  2. Step 2: Convert to fraction form
    459,149.60/687,363.60 = 341,343.20/x
  3. Step 3: Cross multiply
    459,149.60x = 687,363.60 × 341,343.20
  4. Step 4: Simplify right side
    459,149.60x = 234,626,890,787.52
  5. Step 5: Solve for x
    x = 234,626,890,787.52/459,149.60
  6. Step 6: Final answer
    x = 511,003.15

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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.