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Finding the Fourth Proportional to 486,723.60, 730,085.40 and 206,204.40

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Solution

The fourth proportional to 486,723.60, 730,085.40 and 206,204.40 is: 309,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,723.60 : 730,085.40 = 206,204.40 : x
  2. Step 2: Convert to fraction form
    486,723.60/730,085.40 = 206,204.40/x
  3. Step 3: Cross multiply
    486,723.60x = 730,085.40 × 206,204.40
  4. Step 4: Simplify right side
    486,723.60x = 150,546,821,855.76
  5. Step 5: Solve for x
    x = 150,546,821,855.76/486,723.60
  6. Step 6: Final answer
    x = 309,306.60

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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.