Home / 431,976.11-647,890.32-116,359.20

Finding the Fourth Proportional to 431,976.11, 647,890.32 and 116,359.20

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Solution

The fourth proportional to 431,976.11, 647,890.32 and 116,359.20 is: 174,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,976.11 : 647,890.32 = 116,359.20 : x
  2. Step 2: Convert to fraction form
    431,976.11/647,890.32 = 116,359.20/x
  3. Step 3: Cross multiply
    431,976.11x = 647,890.32 × 116,359.20
  4. Step 4: Simplify right side
    431,976.11x = 75,387,999,322.94
  5. Step 5: Solve for x
    x = 75,387,999,322.94/431,976.11
  6. Step 6: Final answer
    x = 174,518.91

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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.