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Finding the Fourth Proportional to 220,526.59, 330,899.18 and 87,403.87

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Solution

The fourth proportional to 220,526.59, 330,899.18 and 87,403.87 is: 131,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,526.59 : 330,899.18 = 87,403.87 : x
  2. Step 2: Convert to fraction form
    220,526.59/330,899.18 = 87,403.87/x
  3. Step 3: Cross multiply
    220,526.59x = 330,899.18 × 87,403.87
  4. Step 4: Simplify right side
    220,526.59x = 28,921,868,474.81
  5. Step 5: Solve for x
    x = 28,921,868,474.81/220,526.59
  6. Step 6: Final answer
    x = 131,149.12

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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.