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Finding the Fourth Proportional to 235,061.88, 324,414.08 and 138,261.12

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Solution

The fourth proportional to 235,061.88, 324,414.08 and 138,261.12 is: 190,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,061.88 : 324,414.08 = 138,261.12 : x
  2. Step 2: Convert to fraction form
    235,061.88/324,414.08 = 138,261.12/x
  3. Step 3: Cross multiply
    235,061.88x = 324,414.08 × 138,261.12
  4. Step 4: Simplify right side
    235,061.88x = 44,853,854,044.57
  5. Step 5: Solve for x
    x = 44,853,854,044.57/235,061.88
  6. Step 6: Final answer
    x = 190,817.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.