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Finding the Fourth Proportional to 423,885.76, 635,688.24 and 171,100.96

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Solution

The fourth proportional to 423,885.76, 635,688.24 and 171,100.96 is: 256,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,885.76 : 635,688.24 = 171,100.96 : x
  2. Step 2: Convert to fraction form
    423,885.76/635,688.24 = 171,100.96/x
  3. Step 3: Cross multiply
    423,885.76x = 635,688.24 × 171,100.96
  4. Step 4: Simplify right side
    423,885.76x = 108,766,868,124.71
  5. Step 5: Solve for x
    x = 108,766,868,124.71/423,885.76
  6. Step 6: Final answer
    x = 256,594.77

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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.