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Finding the Fourth Proportional to 288,470.52, 431,948.70 and 203,772.60

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Solution

The fourth proportional to 288,470.52, 431,948.70 and 203,772.60 is: 305,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,470.52 : 431,948.70 = 203,772.60 : x
  2. Step 2: Convert to fraction form
    288,470.52/431,948.70 = 203,772.60/x
  3. Step 3: Cross multiply
    288,470.52x = 431,948.70 × 203,772.60
  4. Step 4: Simplify right side
    288,470.52x = 88,019,309,665.62
  5. Step 5: Solve for x
    x = 88,019,309,665.62/288,470.52
  6. Step 6: Final answer
    x = 305,124.11

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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.