Home / 218,721.40-328,082.10-147,862.60

Finding the Fourth Proportional to 218,721.40, 328,082.10 and 147,862.60

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Solution

The fourth proportional to 218,721.40, 328,082.10 and 147,862.60 is: 221,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,721.40 : 328,082.10 = 147,862.60 : x
  2. Step 2: Convert to fraction form
    218,721.40/328,082.10 = 147,862.60/x
  3. Step 3: Cross multiply
    218,721.40x = 328,082.10 × 147,862.60
  4. Step 4: Simplify right side
    218,721.40x = 48,511,072,319.46
  5. Step 5: Solve for x
    x = 48,511,072,319.46/218,721.40
  6. Step 6: Final answer
    x = 221,793.90

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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.