Home / 438,960.38-658,371.88-139,401.52

Finding the Fourth Proportional to 438,960.38, 658,371.88 and 139,401.52

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Solution

The fourth proportional to 438,960.38, 658,371.88 and 139,401.52 is: 209,080.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,960.38 : 658,371.88 = 139,401.52 : x
  2. Step 2: Convert to fraction form
    438,960.38/658,371.88 = 139,401.52/x
  3. Step 3: Cross multiply
    438,960.38x = 658,371.88 × 139,401.52
  4. Step 4: Simplify right side
    438,960.38x = 91,778,040,797.26
  5. Step 5: Solve for x
    x = 91,778,040,797.26/438,960.38
  6. Step 6: Final answer
    x = 209,080.47

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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.