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Finding the Fourth Proportional to 605,630.40, 908,445.60 and 206,138.40

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Solution

The fourth proportional to 605,630.40, 908,445.60 and 206,138.40 is: 309,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,630.40 : 908,445.60 = 206,138.40 : x
  2. Step 2: Convert to fraction form
    605,630.40/908,445.60 = 206,138.40/x
  3. Step 3: Cross multiply
    605,630.40x = 908,445.60 × 206,138.40
  4. Step 4: Simplify right side
    605,630.40x = 187,265,522,471.04
  5. Step 5: Solve for x
    x = 187,265,522,471.04/605,630.40
  6. Step 6: Final answer
    x = 309,207.60

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Similar ratio
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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.