Home / 480,744.48-721,134.72-143,789.52

Finding the Fourth Proportional to 480,744.48, 721,134.72 and 143,789.52

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Solution

The fourth proportional to 480,744.48, 721,134.72 and 143,789.52 is: 215,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,744.48 : 721,134.72 = 143,789.52 : x
  2. Step 2: Convert to fraction form
    480,744.48/721,134.72 = 143,789.52/x
  3. Step 3: Cross multiply
    480,744.48x = 721,134.72 × 143,789.52
  4. Step 4: Simplify right side
    480,744.48x = 103,691,615,244.13
  5. Step 5: Solve for x
    x = 103,691,615,244.13/480,744.48
  6. Step 6: Final answer
    x = 215,689.66

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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.