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Finding the Fourth Proportional to 220,545.70, 330,818.55 and 87,381.70

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Solution

The fourth proportional to 220,545.70, 330,818.55 and 87,381.70 is: 131,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,545.70 : 330,818.55 = 87,381.70 : x
  2. Step 2: Convert to fraction form
    220,545.70/330,818.55 = 87,381.70/x
  3. Step 3: Cross multiply
    220,545.70x = 330,818.55 × 87,381.70
  4. Step 4: Simplify right side
    220,545.70x = 28,907,487,290.54
  5. Step 5: Solve for x
    x = 28,907,487,290.54/220,545.70
  6. Step 6: Final answer
    x = 131,072.55

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1.5x scale

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.