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Finding the Fourth Proportional to 499,159.97, 688,840.74 and 272,805.47

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Solution

The fourth proportional to 499,159.97, 688,840.74 and 272,805.47 is: 376,471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,159.97 : 688,840.74 = 272,805.47 : x
  2. Step 2: Convert to fraction form
    499,159.97/688,840.74 = 272,805.47/x
  3. Step 3: Cross multiply
    499,159.97x = 688,840.74 × 272,805.47
  4. Step 4: Simplify right side
    499,159.97x = 187,919,521,830.85
  5. Step 5: Solve for x
    x = 187,919,521,830.85/499,159.97
  6. Step 6: Final answer
    x = 376,471.54

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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.