Home / 442,862.57-664,399.31-143,343.20

Finding the Fourth Proportional to 442,862.57, 664,399.31 and 143,343.20

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Solution

The fourth proportional to 442,862.57, 664,399.31 and 143,343.20 is: 215,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,862.57 : 664,399.31 = 143,343.20 : x
  2. Step 2: Convert to fraction form
    442,862.57/664,399.31 = 143,343.20/x
  3. Step 3: Cross multiply
    442,862.57x = 664,399.31 × 143,343.20
  4. Step 4: Simplify right side
    442,862.57x = 95,237,119,134.48
  5. Step 5: Solve for x
    x = 95,237,119,134.48/442,862.57
  6. Step 6: Final answer
    x = 215,048.93

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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.