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Finding the Fourth Proportional to 316,994.91, 475,494.25 and 80,338.29

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Solution

The fourth proportional to 316,994.91, 475,494.25 and 80,338.29 is: 120,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,994.91 : 475,494.25 = 80,338.29 : x
  2. Step 2: Convert to fraction form
    316,994.91/475,494.25 = 80,338.29/x
  3. Step 3: Cross multiply
    316,994.91x = 475,494.25 × 80,338.29
  4. Step 4: Simplify right side
    316,994.91x = 38,200,394,949.83
  5. Step 5: Solve for x
    x = 38,200,394,949.83/316,994.91
  6. Step 6: Final answer
    x = 120,507.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.