Home / 312,324.80-431,008.04-169,084.72

Finding the Fourth Proportional to 312,324.80, 431,008.04 and 169,084.72

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Solution

The fourth proportional to 312,324.80, 431,008.04 and 169,084.72 is: 233,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,324.80 : 431,008.04 = 169,084.72 : x
  2. Step 2: Convert to fraction form
    312,324.80/431,008.04 = 169,084.72/x
  3. Step 3: Cross multiply
    312,324.80x = 431,008.04 × 169,084.72
  4. Step 4: Simplify right side
    312,324.80x = 72,876,873,761.15
  5. Step 5: Solve for x
    x = 72,876,873,761.15/312,324.80
  6. Step 6: Final answer
    x = 233,336.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.