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Finding the Fourth Proportional to 372,731.80, 559,097.70 and 136,082.20

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Solution

The fourth proportional to 372,731.80, 559,097.70 and 136,082.20 is: 204,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,731.80 : 559,097.70 = 136,082.20 : x
  2. Step 2: Convert to fraction form
    372,731.80/559,097.70 = 136,082.20/x
  3. Step 3: Cross multiply
    372,731.80x = 559,097.70 × 136,082.20
  4. Step 4: Simplify right side
    372,731.80x = 76,083,245,030.94
  5. Step 5: Solve for x
    x = 76,083,245,030.94/372,731.80
  6. Step 6: Final answer
    x = 204,123.30

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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.