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Finding the Fourth Proportional to 485,107.92, 669,419.78 and 270,209.66

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Solution

The fourth proportional to 485,107.92, 669,419.78 and 270,209.66 is: 372,873.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,107.92 : 669,419.78 = 270,209.66 : x
  2. Step 2: Convert to fraction form
    485,107.92/669,419.78 = 270,209.66/x
  3. Step 3: Cross multiply
    485,107.92x = 669,419.78 × 270,209.66
  4. Step 4: Simplify right side
    485,107.92x = 180,883,686,452.93
  5. Step 5: Solve for x
    x = 180,883,686,452.93/485,107.92
  6. Step 6: Final answer
    x = 372,873.08

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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.