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Finding the Fourth Proportional to 155,309.40, 232,964.10 and 55,517.40

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Solution

The fourth proportional to 155,309.40, 232,964.10 and 55,517.40 is: 83,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,309.40 : 232,964.10 = 55,517.40 : x
  2. Step 2: Convert to fraction form
    155,309.40/232,964.10 = 55,517.40/x
  3. Step 3: Cross multiply
    155,309.40x = 232,964.10 × 55,517.40
  4. Step 4: Simplify right side
    155,309.40x = 12,933,561,125.34
  5. Step 5: Solve for x
    x = 12,933,561,125.34/155,309.40
  6. Step 6: Final answer
    x = 83,276.10

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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.