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Finding the Fourth Proportional to 515,816.38, 773,749.17 and 216,306.73

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Solution

The fourth proportional to 515,816.38, 773,749.17 and 216,306.73 is: 324,470.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,816.38 : 773,749.17 = 216,306.73 : x
  2. Step 2: Convert to fraction form
    515,816.38/773,749.17 = 216,306.73/x
  3. Step 3: Cross multiply
    515,816.38x = 773,749.17 × 216,306.73
  4. Step 4: Simplify right side
    515,816.38x = 167,367,152,802.91
  5. Step 5: Solve for x
    x = 167,367,152,802.91/515,816.38
  6. Step 6: Final answer
    x = 324,470.41

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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.