Home / 442,945.28-664,514.81-143,456.13

Finding the Fourth Proportional to 442,945.28, 664,514.81 and 143,456.13

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Solution

The fourth proportional to 442,945.28, 664,514.81 and 143,456.13 is: 215,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,945.28 : 664,514.81 = 143,456.13 : x
  2. Step 2: Convert to fraction form
    442,945.28/664,514.81 = 143,456.13/x
  3. Step 3: Cross multiply
    442,945.28x = 664,514.81 × 143,456.13
  4. Step 4: Simplify right side
    442,945.28x = 95,328,722,970.29
  5. Step 5: Solve for x
    x = 95,328,722,970.29/442,945.28
  6. Step 6: Final answer
    x = 215,215.58

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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.