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Finding the Fourth Proportional to 234,988.97, 352,374.10 and 85,223.21

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Solution

The fourth proportional to 234,988.97, 352,374.10 and 85,223.21 is: 127,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,988.97 : 352,374.10 = 85,223.21 : x
  2. Step 2: Convert to fraction form
    234,988.97/352,374.10 = 85,223.21/x
  3. Step 3: Cross multiply
    234,988.97x = 352,374.10 × 85,223.21
  4. Step 4: Simplify right side
    234,988.97x = 30,030,449,947.93
  5. Step 5: Solve for x
    x = 30,030,449,947.93/234,988.97
  6. Step 6: Final answer
    x = 127,795.15

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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.