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Finding the Fourth Proportional to 579,925.76, 870,109.92 and 225,188.64

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Solution

The fourth proportional to 579,925.76, 870,109.92 and 225,188.64 is: 337,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,925.76 : 870,109.92 = 225,188.64 : x
  2. Step 2: Convert to fraction form
    579,925.76/870,109.92 = 225,188.64/x
  3. Step 3: Cross multiply
    579,925.76x = 870,109.92 × 225,188.64
  4. Step 4: Simplify right side
    579,925.76x = 195,938,869,535.31
  5. Step 5: Solve for x
    x = 195,938,869,535.31/579,925.76
  6. Step 6: Final answer
    x = 337,868.88

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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.