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Finding the Fourth Proportional to 312,592.83, 431,380.17 and 169,352.87

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Solution

The fourth proportional to 312,592.83, 431,380.17 and 169,352.87 is: 233,708.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,592.83 : 431,380.17 = 169,352.87 : x
  2. Step 2: Convert to fraction form
    312,592.83/431,380.17 = 169,352.87/x
  3. Step 3: Cross multiply
    312,592.83x = 431,380.17 × 169,352.87
  4. Step 4: Simplify right side
    312,592.83x = 73,055,471,560.36
  5. Step 5: Solve for x
    x = 73,055,471,560.36/312,592.83
  6. Step 6: Final answer
    x = 233,708.09

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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.