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Finding the Fourth Proportional to 312,436.92, 431,159.58 and 176,471.13

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Solution

The fourth proportional to 312,436.92, 431,159.58 and 176,471.13 is: 243,528.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,436.92 : 431,159.58 = 176,471.13 : x
  2. Step 2: Convert to fraction form
    312,436.92/431,159.58 = 176,471.13/x
  3. Step 3: Cross multiply
    312,436.92x = 431,159.58 × 176,471.13
  4. Step 4: Simplify right side
    312,436.92x = 76,087,218,292.93
  5. Step 5: Solve for x
    x = 76,087,218,292.93/312,436.92
  6. Step 6: Final answer
    x = 243,528.26

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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.