Home / 257,699.11-386,585.13-80,224.06

Finding the Fourth Proportional to 257,699.11, 386,585.13 and 80,224.06

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Solution

The fourth proportional to 257,699.11, 386,585.13 and 80,224.06 is: 120,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,699.11 : 386,585.13 = 80,224.06 : x
  2. Step 2: Convert to fraction form
    257,699.11/386,585.13 = 80,224.06/x
  3. Step 3: Cross multiply
    257,699.11x = 386,585.13 × 80,224.06
  4. Step 4: Simplify right side
    257,699.11x = 31,013,428,664.23
  5. Step 5: Solve for x
    x = 31,013,428,664.23/257,699.11
  6. Step 6: Final answer
    x = 120,347.44

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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.