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Finding the Fourth Proportional to 312,760.62, 431,610.42 and 169,520.52

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Solution

The fourth proportional to 312,760.62, 431,610.42 and 169,520.52 is: 233,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,760.62 : 431,610.42 = 169,520.52 : x
  2. Step 2: Convert to fraction form
    312,760.62/431,610.42 = 169,520.52/x
  3. Step 3: Cross multiply
    312,760.62x = 431,610.42 × 169,520.52
  4. Step 4: Simplify right side
    312,760.62x = 73,166,822,835.82
  5. Step 5: Solve for x
    x = 73,166,822,835.82/312,760.62
  6. Step 6: Final answer
    x = 233,938.73

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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.