Home / 439,208.12-658,805.24-139,684.38

Finding the Fourth Proportional to 439,208.12, 658,805.24 and 139,684.38

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Solution

The fourth proportional to 439,208.12, 658,805.24 and 139,684.38 is: 209,524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,208.12 : 658,805.24 = 139,684.38 : x
  2. Step 2: Convert to fraction form
    439,208.12/658,805.24 = 139,684.38/x
  3. Step 3: Cross multiply
    439,208.12x = 658,805.24 × 139,684.38
  4. Step 4: Simplify right side
    439,208.12x = 92,024,801,490.15
  5. Step 5: Solve for x
    x = 92,024,801,490.15/439,208.12
  6. Step 6: Final answer
    x = 209,524.36

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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.