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Finding the Fourth Proportional to 220,526.31, 330,898.77 and 87,403.62

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Solution

The fourth proportional to 220,526.31, 330,898.77 and 87,403.62 is: 131,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,526.31 : 330,898.77 = 87,403.62 : x
  2. Step 2: Convert to fraction form
    220,526.31/330,898.77 = 87,403.62/x
  3. Step 3: Cross multiply
    220,526.31x = 330,898.77 × 87,403.62
  4. Step 4: Simplify right side
    220,526.31x = 28,921,750,351.55
  5. Step 5: Solve for x
    x = 28,921,750,351.55/220,526.31
  6. Step 6: Final answer
    x = 131,148.75

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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.