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Finding the Fourth Proportional to 220,551.29, 330,829.17 and 87,432.65

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Solution

The fourth proportional to 220,551.29, 330,829.17 and 87,432.65 is: 131,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,551.29 : 330,829.17 = 87,432.65 : x
  2. Step 2: Convert to fraction form
    220,551.29/330,829.17 = 87,432.65/x
  3. Step 3: Cross multiply
    220,551.29x = 330,829.17 × 87,432.65
  4. Step 4: Simplify right side
    220,551.29x = 28,925,271,638.89
  5. Step 5: Solve for x
    x = 28,925,271,638.89/220,551.29
  6. Step 6: Final answer
    x = 131,149.86

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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.