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Finding the Fourth Proportional to 311,947.40, 467,690.70 and 124,862.60

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Solution

The fourth proportional to 311,947.40, 467,690.70 and 124,862.60 is: 187,201.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,947.40 : 467,690.70 = 124,862.60 : x
  2. Step 2: Convert to fraction form
    311,947.40/467,690.70 = 124,862.60/x
  3. Step 3: Cross multiply
    311,947.40x = 467,690.70 × 124,862.60
  4. Step 4: Simplify right side
    311,947.40x = 58,397,076,797.82
  5. Step 5: Solve for x
    x = 58,397,076,797.82/311,947.40
  6. Step 6: Final answer
    x = 187,201.68

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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.