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Finding the Fourth Proportional to 387,553.71, 534,970.27 and 226,461.12

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Solution

The fourth proportional to 387,553.71, 534,970.27 and 226,461.12 is: 312,601.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,553.71 : 534,970.27 = 226,461.12 : x
  2. Step 2: Convert to fraction form
    387,553.71/534,970.27 = 226,461.12/x
  3. Step 3: Cross multiply
    387,553.71x = 534,970.27 × 226,461.12
  4. Step 4: Simplify right side
    387,553.71x = 121,149,964,787.84
  5. Step 5: Solve for x
    x = 121,149,964,787.84/387,553.71
  6. Step 6: Final answer
    x = 312,601.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.