Home / 431,079.17-646,618.68-131,561.28

Finding the Fourth Proportional to 431,079.17, 646,618.68 and 131,561.28

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Solution

The fourth proportional to 431,079.17, 646,618.68 and 131,561.28 is: 197,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,079.17 : 646,618.68 = 131,561.28 : x
  2. Step 2: Convert to fraction form
    431,079.17/646,618.68 = 131,561.28/x
  3. Step 3: Cross multiply
    431,079.17x = 646,618.68 × 131,561.28
  4. Step 4: Simplify right side
    431,079.17x = 85,069,981,212.71
  5. Step 5: Solve for x
    x = 85,069,981,212.71/431,079.17
  6. Step 6: Final answer
    x = 197,341.90

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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.