Home / 431,382.95-647,076.08-131,862.36

Finding the Fourth Proportional to 431,382.95, 647,076.08 and 131,862.36

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Solution

The fourth proportional to 431,382.95, 647,076.08 and 131,862.36 is: 197,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,382.95 : 647,076.08 = 131,862.36 : x
  2. Step 2: Convert to fraction form
    431,382.95/647,076.08 = 131,862.36/x
  3. Step 3: Cross multiply
    431,382.95x = 647,076.08 × 131,862.36
  4. Step 4: Simplify right side
    431,382.95x = 85,324,979,338.00
  5. Step 5: Solve for x
    x = 85,324,979,338.00/431,382.95
  6. Step 6: Final answer
    x = 197,794.05

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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.