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Finding the Fourth Proportional to 312,404.37, 431,117.40 and 169,163.97

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Solution

The fourth proportional to 312,404.37, 431,117.40 and 169,163.97 is: 233,445.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,404.37 : 431,117.40 = 169,163.97 : x
  2. Step 2: Convert to fraction form
    312,404.37/431,117.40 = 169,163.97/x
  3. Step 3: Cross multiply
    312,404.37x = 431,117.40 × 169,163.97
  4. Step 4: Simplify right side
    312,404.37x = 72,929,530,920.08
  5. Step 5: Solve for x
    x = 72,929,530,920.08/312,404.37
  6. Step 6: Final answer
    x = 233,445.94

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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.