Home / 431,569.47-647,356.25-132,049.58

Finding the Fourth Proportional to 431,569.47, 647,356.25 and 132,049.58

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Solution

The fourth proportional to 431,569.47, 647,356.25 and 132,049.58 is: 198,074.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569.47 : 647,356.25 = 132,049.58 : x
  2. Step 2: Convert to fraction form
    431,569.47/647,356.25 = 132,049.58/x
  3. Step 3: Cross multiply
    431,569.47x = 647,356.25 × 132,049.58
  4. Step 4: Simplify right side
    431,569.47x = 85,483,118,016.22
  5. Step 5: Solve for x
    x = 85,483,118,016.22/431,569.47
  6. Step 6: Final answer
    x = 198,074.99

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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.