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Finding the Fourth Proportional to 312,488.46, 431,233.70 and 169,249.10

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Solution

The fourth proportional to 312,488.46, 431,233.70 and 169,249.10 is: 233,563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,488.46 : 431,233.70 = 169,249.10 : x
  2. Step 2: Convert to fraction form
    312,488.46/431,233.70 = 169,249.10/x
  3. Step 3: Cross multiply
    312,488.46x = 431,233.70 × 169,249.10
  4. Step 4: Simplify right side
    312,488.46x = 72,985,912,612.26
  5. Step 5: Solve for x
    x = 72,985,912,612.26/312,488.46
  6. Step 6: Final answer
    x = 233,563.55

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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.