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Finding the Fourth Proportional to 499,057.56, 688,716.42 and 272,717.64

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Solution

The fourth proportional to 499,057.56, 688,716.42 and 272,717.64 is: 376,359.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,057.56 : 688,716.42 = 272,717.64 : x
  2. Step 2: Convert to fraction form
    499,057.56/688,716.42 = 272,717.64/x
  3. Step 3: Cross multiply
    499,057.56x = 688,716.42 × 272,717.64
  4. Step 4: Simplify right side
    499,057.56x = 187,825,116,691.65
  5. Step 5: Solve for x
    x = 187,825,116,691.65/499,057.56
  6. Step 6: Final answer
    x = 376,359.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.