Home / 439,032.15-658,408.10-139,442.61

Finding the Fourth Proportional to 439,032.15, 658,408.10 and 139,442.61

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Solution

The fourth proportional to 439,032.15, 658,408.10 and 139,442.61 is: 209,119.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,032.15 : 658,408.10 = 139,442.61 : x
  2. Step 2: Convert to fraction form
    439,032.15/658,408.10 = 139,442.61/x
  3. Step 3: Cross multiply
    439,032.15x = 658,408.10 × 139,442.61
  4. Step 4: Simplify right side
    439,032.15x = 91,810,145,680.96
  5. Step 5: Solve for x
    x = 91,810,145,680.96/439,032.15
  6. Step 6: Final answer
    x = 209,119.41

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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.