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Finding the Fourth Proportional to 316,787.80, 437,174.98 and 173,548.20

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Solution

The fourth proportional to 316,787.80, 437,174.98 and 173,548.20 is: 239,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,787.80 : 437,174.98 = 173,548.20 : x
  2. Step 2: Convert to fraction form
    316,787.80/437,174.98 = 173,548.20/x
  3. Step 3: Cross multiply
    316,787.80x = 437,174.98 × 173,548.20
  4. Step 4: Simplify right side
    316,787.80x = 75,870,930,864.04
  5. Step 5: Solve for x
    x = 75,870,930,864.04/316,787.80
  6. Step 6: Final answer
    x = 239,500.80

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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.