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Finding the Fourth Proportional to 220,545.20, 330,655.80 and 87,359.60

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Solution

The fourth proportional to 220,545.20, 330,655.80 and 87,359.60 is: 130,975.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,545.20 : 330,655.80 = 87,359.60 : x
  2. Step 2: Convert to fraction form
    220,545.20/330,655.80 = 87,359.60/x
  3. Step 3: Cross multiply
    220,545.20x = 330,655.80 × 87,359.60
  4. Step 4: Simplify right side
    220,545.20x = 28,885,958,425.68
  5. Step 5: Solve for x
    x = 28,885,958,425.68/220,545.20
  6. Step 6: Final answer
    x = 130,975.23

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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.