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Finding the Fourth Proportional to 218,112.41, 300,872.18 and 127,449.11

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Solution

The fourth proportional to 218,112.41, 300,872.18 and 127,449.11 is: 175,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,112.41 : 300,872.18 = 127,449.11 : x
  2. Step 2: Convert to fraction form
    218,112.41/300,872.18 = 127,449.11/x
  3. Step 3: Cross multiply
    218,112.41x = 300,872.18 × 127,449.11
  4. Step 4: Simplify right side
    218,112.41x = 38,345,891,564.76
  5. Step 5: Solve for x
    x = 38,345,891,564.76/218,112.41
  6. Step 6: Final answer
    x = 175,807.93

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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.