Home / 218,490.90-327,781.32-92,131.50

Finding the Fourth Proportional to 218,490.90, 327,781.32 and 92,131.50

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Solution

The fourth proportional to 218,490.90, 327,781.32 and 92,131.50 is: 138,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,490.90 : 327,781.32 = 92,131.50 : x
  2. Step 2: Convert to fraction form
    218,490.90/327,781.32 = 92,131.50/x
  3. Step 3: Cross multiply
    218,490.90x = 327,781.32 × 92,131.50
  4. Step 4: Simplify right side
    218,490.90x = 30,198,984,683.58
  5. Step 5: Solve for x
    x = 30,198,984,683.58/218,490.90
  6. Step 6: Final answer
    x = 138,216.21

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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.