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Finding the Fourth Proportional to 499,062.92, 688,708.64 and 272,708.44

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Solution

The fourth proportional to 499,062.92, 688,708.64 and 272,708.44 is: 376,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,062.92 : 688,708.64 = 272,708.44 : x
  2. Step 2: Convert to fraction form
    499,062.92/688,708.64 = 272,708.44/x
  3. Step 3: Cross multiply
    499,062.92x = 688,708.64 × 272,708.44
  4. Step 4: Simplify right side
    499,062.92x = 187,816,658,828.92
  5. Step 5: Solve for x
    x = 187,816,658,828.92/499,062.92
  6. Step 6: Final answer
    x = 376,338.64

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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.