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Finding the Fourth Proportional to 499,047.67, 688,687.55 and 272,693.17

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Solution

The fourth proportional to 499,047.67, 688,687.55 and 272,693.17 is: 376,317.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,047.67 : 688,687.55 = 272,693.17 : x
  2. Step 2: Convert to fraction form
    499,047.67/688,687.55 = 272,693.17/x
  3. Step 3: Cross multiply
    499,047.67x = 688,687.55 × 272,693.17
  4. Step 4: Simplify right side
    499,047.67x = 187,800,391,149.03
  5. Step 5: Solve for x
    x = 187,800,391,149.03/499,047.67
  6. Step 6: Final answer
    x = 376,317.54

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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.