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Finding the Fourth Proportional to 312,894.44, 431,794.34 and 169,654.44

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Solution

The fourth proportional to 312,894.44, 431,794.34 and 169,654.44 is: 234,123.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,894.44 : 431,794.34 = 169,654.44 : x
  2. Step 2: Convert to fraction form
    312,894.44/431,794.34 = 169,654.44/x
  3. Step 3: Cross multiply
    312,894.44x = 431,794.34 × 169,654.44
  4. Step 4: Simplify right side
    312,894.44x = 73,255,826,947.87
  5. Step 5: Solve for x
    x = 73,255,826,947.87/312,894.44
  6. Step 6: Final answer
    x = 234,123.13

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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.