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Finding the Fourth Proportional to 426,123.92, 639,471 and 176,805.92

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Solution

The fourth proportional to 426,123.92, 639,471 and 176,805.92 is: 265,327.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,123.92 : 639,471 = 176,805.92 : x
  2. Step 2: Convert to fraction form
    426,123.92/639,471 = 176,805.92/x
  3. Step 3: Cross multiply
    426,123.92x = 639,471 × 176,805.92
  4. Step 4: Simplify right side
    426,123.92x = 113,062,258,468.32
  5. Step 5: Solve for x
    x = 113,062,258,468.32/426,123.92
  6. Step 6: Final answer
    x = 265,327.18

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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.