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Finding the Fourth Proportional to 499,062.56, 688,723.32 and 272,722.64

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Solution

The fourth proportional to 499,062.56, 688,723.32 and 272,722.64 is: 376,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,062.56 : 688,723.32 = 272,722.64 : x
  2. Step 2: Convert to fraction form
    499,062.56/688,723.32 = 272,722.64/x
  3. Step 3: Cross multiply
    499,062.56x = 688,723.32 × 272,722.64
  4. Step 4: Simplify right side
    499,062.56x = 187,830,442,059.97
  5. Step 5: Solve for x
    x = 187,830,442,059.97/499,062.56
  6. Step 6: Final answer
    x = 376,366.53

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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.