Home / 431,356.68-647,035.02-131,838.12

Finding the Fourth Proportional to 431,356.68, 647,035.02 and 131,838.12

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Solution

The fourth proportional to 431,356.68, 647,035.02 and 131,838.12 is: 197,757.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,356.68 : 647,035.02 = 131,838.12 : x
  2. Step 2: Convert to fraction form
    431,356.68/647,035.02 = 131,838.12/x
  3. Step 3: Cross multiply
    431,356.68x = 647,035.02 × 131,838.12
  4. Step 4: Simplify right side
    431,356.68x = 85,303,880,610.96
  5. Step 5: Solve for x
    x = 85,303,880,610.96/431,356.68
  6. Step 6: Final answer
    x = 197,757.18

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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.