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Finding the Fourth Proportional to 499,064.56, 688,726.08 and 272,724.64

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Solution

The fourth proportional to 499,064.56, 688,726.08 and 272,724.64 is: 376,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,064.56 : 688,726.08 = 272,724.64 : x
  2. Step 2: Convert to fraction form
    499,064.56/688,726.08 = 272,724.64/x
  3. Step 3: Cross multiply
    499,064.56x = 688,726.08 × 272,724.64
  4. Step 4: Simplify right side
    499,064.56x = 187,832,572,226.61
  5. Step 5: Solve for x
    x = 187,832,572,226.61/499,064.56
  6. Step 6: Final answer
    x = 376,369.29

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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.