Home / 431,899.56-647,973.84-132,424.32

Finding the Fourth Proportional to 431,899.56, 647,973.84 and 132,424.32

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Solution

The fourth proportional to 431,899.56, 647,973.84 and 132,424.32 is: 198,674.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,899.56 : 647,973.84 = 132,424.32 : x
  2. Step 2: Convert to fraction form
    431,899.56/647,973.84 = 132,424.32/x
  3. Step 3: Cross multiply
    431,899.56x = 647,973.84 × 132,424.32
  4. Step 4: Simplify right side
    431,899.56x = 85,807,495,139.79
  5. Step 5: Solve for x
    x = 85,807,495,139.79/431,899.56
  6. Step 6: Final answer
    x = 198,674.65

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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.