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Finding the Fourth Proportional to 234,880.16, 352,347.76 and 85,191.20

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Solution

The fourth proportional to 234,880.16, 352,347.76 and 85,191.20 is: 127,796.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,880.16 : 352,347.76 = 85,191.20 : x
  2. Step 2: Convert to fraction form
    234,880.16/352,347.76 = 85,191.20/x
  3. Step 3: Cross multiply
    234,880.16x = 352,347.76 × 85,191.20
  4. Step 4: Simplify right side
    234,880.16x = 30,016,928,491.71
  5. Step 5: Solve for x
    x = 30,016,928,491.71/234,880.16
  6. Step 6: Final answer
    x = 127,796.78

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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.