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Finding the Fourth Proportional to 531,356.52, 797,209.76 and 215,728.68

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Solution

The fourth proportional to 531,356.52, 797,209.76 and 215,728.68 is: 323,664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,356.52 : 797,209.76 = 215,728.68 : x
  2. Step 2: Convert to fraction form
    531,356.52/797,209.76 = 215,728.68/x
  3. Step 3: Cross multiply
    531,356.52x = 797,209.76 × 215,728.68
  4. Step 4: Simplify right side
    531,356.52x = 171,981,009,207.92
  5. Step 5: Solve for x
    x = 171,981,009,207.92/531,356.52
  6. Step 6: Final answer
    x = 323,664.06

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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.