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Finding the Fourth Proportional to 217,480.80, 326,000.88 and 147,367.20

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Solution

The fourth proportional to 217,480.80, 326,000.88 and 147,367.20 is: 220,901.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,480.80 : 326,000.88 = 147,367.20 : x
  2. Step 2: Convert to fraction form
    217,480.80/326,000.88 = 147,367.20/x
  3. Step 3: Cross multiply
    217,480.80x = 326,000.88 × 147,367.20
  4. Step 4: Simplify right side
    217,480.80x = 48,041,836,883.14
  5. Step 5: Solve for x
    x = 48,041,836,883.14/217,480.80
  6. Step 6: Final answer
    x = 220,901.51

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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.