Home / 431,422.02-647,130.20-131,901.44

Finding the Fourth Proportional to 431,422.02, 647,130.20 and 131,901.44

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Solution

The fourth proportional to 431,422.02, 647,130.20 and 131,901.44 is: 197,851.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,422.02 : 647,130.20 = 131,901.44 : x
  2. Step 2: Convert to fraction form
    431,422.02/647,130.20 = 131,901.44/x
  3. Step 3: Cross multiply
    431,422.02x = 647,130.20 × 131,901.44
  4. Step 4: Simplify right side
    431,422.02x = 85,357,401,352.33
  5. Step 5: Solve for x
    x = 85,357,401,352.33/431,422.02
  6. Step 6: Final answer
    x = 197,851.29

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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.