Home / 220,731.53-331,146.66-80,490.16

Finding the Fourth Proportional to 220,731.53, 331,146.66 and 80,490.16

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Solution

The fourth proportional to 220,731.53, 331,146.66 and 80,490.16 is: 120,753.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,731.53 : 331,146.66 = 80,490.16 : x
  2. Step 2: Convert to fraction form
    220,731.53/331,146.66 = 80,490.16/x
  3. Step 3: Cross multiply
    220,731.53x = 331,146.66 × 80,490.16
  4. Step 4: Simplify right side
    220,731.53x = 26,654,047,646.87
  5. Step 5: Solve for x
    x = 26,654,047,646.87/220,731.53
  6. Step 6: Final answer
    x = 120,753.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.