Home / 499,091.28-688,761-272,740.56

Finding the Fourth Proportional to 499,091.28, 688,761 and 272,740.56

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Solution

The fourth proportional to 499,091.28, 688,761 and 272,740.56 is: 376,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,091.28 : 688,761 = 272,740.56 : x
  2. Step 2: Convert to fraction form
    499,091.28/688,761 = 272,740.56/x
  3. Step 3: Cross multiply
    499,091.28x = 688,761 × 272,740.56
  4. Step 4: Simplify right side
    499,091.28x = 187,853,060,846.16
  5. Step 5: Solve for x
    x = 187,853,060,846.16/499,091.28
  6. Step 6: Final answer
    x = 376,390.19

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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.