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Finding the Fourth Proportional to 408,787.09, 564,152.72 and 227,498.49

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Solution

The fourth proportional to 408,787.09, 564,152.72 and 227,498.49 is: 313,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,787.09 : 564,152.72 = 227,498.49 : x
  2. Step 2: Convert to fraction form
    408,787.09/564,152.72 = 227,498.49/x
  3. Step 3: Cross multiply
    408,787.09x = 564,152.72 × 227,498.49
  4. Step 4: Simplify right side
    408,787.09x = 128,343,890,791.90
  5. Step 5: Solve for x
    x = 128,343,890,791.90/408,787.09
  6. Step 6: Final answer
    x = 313,962.68

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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.