Home / 312,426.92-431,149.38-169,187.12

Finding the Fourth Proportional to 312,426.92, 431,149.38 and 169,187.12

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Solution

The fourth proportional to 312,426.92, 431,149.38 and 169,187.12 is: 233,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,426.92 : 431,149.38 = 169,187.12 : x
  2. Step 2: Convert to fraction form
    312,426.92/431,149.38 = 169,187.12/x
  3. Step 3: Cross multiply
    312,426.92x = 431,149.38 × 169,187.12
  4. Step 4: Simplify right side
    312,426.92x = 72,944,921,891.99
  5. Step 5: Solve for x
    x = 72,944,921,891.99/312,426.92
  6. Step 6: Final answer
    x = 233,478.35

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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.