Home / 431,180.64-646,721.42-115,612.74

Finding the Fourth Proportional to 431,180.64, 646,721.42 and 115,612.74

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Solution

The fourth proportional to 431,180.64, 646,721.42 and 115,612.74 is: 173,405.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,180.64 : 646,721.42 = 115,612.74 : x
  2. Step 2: Convert to fraction form
    431,180.64/646,721.42 = 115,612.74/x
  3. Step 3: Cross multiply
    431,180.64x = 646,721.42 × 115,612.74
  4. Step 4: Simplify right side
    431,180.64x = 74,769,234,804.83
  5. Step 5: Solve for x
    x = 74,769,234,804.83/431,180.64
  6. Step 6: Final answer
    x = 173,405.83

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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.