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Finding the Fourth Proportional to 311,990.26, 468,043.71 and 125,016.34

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Solution

The fourth proportional to 311,990.26, 468,043.71 and 125,016.34 is: 187,547.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,990.26 : 468,043.71 = 125,016.34 : x
  2. Step 2: Convert to fraction form
    311,990.26/468,043.71 = 125,016.34/x
  3. Step 3: Cross multiply
    311,990.26x = 468,043.71 × 125,016.34
  4. Step 4: Simplify right side
    311,990.26x = 58,513,111,584.22
  5. Step 5: Solve for x
    x = 58,513,111,584.22/311,990.26
  6. Step 6: Final answer
    x = 187,547.88

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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.