Home / 386,648.20-580,023.24-143,456.19

Finding the Fourth Proportional to 386,648.20, 580,023.24 and 143,456.19

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Solution

The fourth proportional to 386,648.20, 580,023.24 and 143,456.19 is: 215,203.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,648.20 : 580,023.24 = 143,456.19 : x
  2. Step 2: Convert to fraction form
    386,648.20/580,023.24 = 143,456.19/x
  3. Step 3: Cross multiply
    386,648.20x = 580,023.24 × 143,456.19
  4. Step 4: Simplify right side
    386,648.20x = 83,207,921,221.74
  5. Step 5: Solve for x
    x = 83,207,921,221.74/386,648.20
  6. Step 6: Final answer
    x = 215,203.18

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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.