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Finding the Fourth Proportional to 312,344.92, 431,035.38 and 169,104.94

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Solution

The fourth proportional to 312,344.92, 431,035.38 and 169,104.94 is: 233,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,344.92 : 431,035.38 = 169,104.94 : x
  2. Step 2: Convert to fraction form
    312,344.92/431,035.38 = 169,104.94/x
  3. Step 3: Cross multiply
    312,344.92x = 431,035.38 × 169,104.94
  4. Step 4: Simplify right side
    312,344.92x = 72,890,212,072.78
  5. Step 5: Solve for x
    x = 72,890,212,072.78/312,344.92
  6. Step 6: Final answer
    x = 233,364.49

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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.