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Finding the Fourth Proportional to 376,719.90, 564,901.65 and 218,996.70

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Solution

The fourth proportional to 376,719.90, 564,901.65 and 218,996.70 is: 328,391.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,719.90 : 564,901.65 = 218,996.70 : x
  2. Step 2: Convert to fraction form
    376,719.90/564,901.65 = 218,996.70/x
  3. Step 3: Cross multiply
    376,719.90x = 564,901.65 × 218,996.70
  4. Step 4: Simplify right side
    376,719.90x = 123,711,597,174.56
  5. Step 5: Solve for x
    x = 123,711,597,174.56/376,719.90
  6. Step 6: Final answer
    x = 328,391.46

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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.