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Finding the Fourth Proportional to 311,901.90, 467,622.45 and 124,817.10

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Solution

The fourth proportional to 311,901.90, 467,622.45 and 124,817.10 is: 187,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,901.90 : 467,622.45 = 124,817.10 : x
  2. Step 2: Convert to fraction form
    311,901.90/467,622.45 = 124,817.10/x
  3. Step 3: Cross multiply
    311,901.90x = 467,622.45 × 124,817.10
  4. Step 4: Simplify right side
    311,901.90x = 58,367,278,103.90
  5. Step 5: Solve for x
    x = 58,367,278,103.90/311,901.90
  6. Step 6: Final answer
    x = 187,133.45

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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.