Home / 422,947.85-634,411.22-123,431.02

Finding the Fourth Proportional to 422,947.85, 634,411.22 and 123,431.02

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Solution

The fourth proportional to 422,947.85, 634,411.22 and 123,431.02 is: 185,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,947.85 : 634,411.22 = 123,431.02 : x
  2. Step 2: Convert to fraction form
    422,947.85/634,411.22 = 123,431.02/x
  3. Step 3: Cross multiply
    422,947.85x = 634,411.22 × 123,431.02
  4. Step 4: Simplify right side
    422,947.85x = 78,306,022,706.59
  5. Step 5: Solve for x
    x = 78,306,022,706.59/422,947.85
  6. Step 6: Final answer
    x = 185,143.45

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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.