Home / 386,359.12-579,535.62-120,119.14

Finding the Fourth Proportional to 386,359.12, 579,535.62 and 120,119.14

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Solution

The fourth proportional to 386,359.12, 579,535.62 and 120,119.14 is: 180,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,359.12 : 579,535.62 = 120,119.14 : x
  2. Step 2: Convert to fraction form
    386,359.12/579,535.62 = 120,119.14/x
  3. Step 3: Cross multiply
    386,359.12x = 579,535.62 × 120,119.14
  4. Step 4: Simplify right side
    386,359.12x = 69,613,320,273.77
  5. Step 5: Solve for x
    x = 69,613,320,273.77/386,359.12
  6. Step 6: Final answer
    x = 180,177.76

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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.