Home / 257,693.12-386,576.14-80,218.06

Finding the Fourth Proportional to 257,693.12, 386,576.14 and 80,218.06

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Solution

The fourth proportional to 257,693.12, 386,576.14 and 80,218.06 is: 120,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,693.12 : 386,576.14 = 80,218.06 : x
  2. Step 2: Convert to fraction form
    257,693.12/386,576.14 = 80,218.06/x
  3. Step 3: Cross multiply
    257,693.12x = 386,576.14 × 80,218.06
  4. Step 4: Simplify right side
    257,693.12x = 31,010,387,993.09
  5. Step 5: Solve for x
    x = 31,010,387,993.09/257,693.12
  6. Step 6: Final answer
    x = 120,338.44

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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.