Home / 431,386.06-647,080.69-131,865.48

Finding the Fourth Proportional to 431,386.06, 647,080.69 and 131,865.48

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Solution

The fourth proportional to 431,386.06, 647,080.69 and 131,865.48 is: 197,798.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,386.06 : 647,080.69 = 131,865.48 : x
  2. Step 2: Convert to fraction form
    431,386.06/647,080.69 = 131,865.48/x
  3. Step 3: Cross multiply
    431,386.06x = 647,080.69 × 131,865.48
  4. Step 4: Simplify right side
    431,386.06x = 85,327,605,785.58
  5. Step 5: Solve for x
    x = 85,327,605,785.58/431,386.06
  6. Step 6: Final answer
    x = 197,798.71

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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.