Home / 438,863.04-658,289.68-139,335.56

Finding the Fourth Proportional to 438,863.04, 658,289.68 and 139,335.56

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Solution

The fourth proportional to 438,863.04, 658,289.68 and 139,335.56 is: 209,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,863.04 : 658,289.68 = 139,335.56 : x
  2. Step 2: Convert to fraction form
    438,863.04/658,289.68 = 139,335.56/x
  3. Step 3: Cross multiply
    438,863.04x = 658,289.68 × 139,335.56
  4. Step 4: Simplify right side
    438,863.04x = 91,723,161,205.02
  5. Step 5: Solve for x
    x = 91,723,161,205.02/438,863.04
  6. Step 6: Final answer
    x = 209,001.79

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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.