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Finding the Fourth Proportional to 394,501.20, 591,751.80 and 141,902.70

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Solution

The fourth proportional to 394,501.20, 591,751.80 and 141,902.70 is: 212,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,501.20 : 591,751.80 = 141,902.70 : x
  2. Step 2: Convert to fraction form
    394,501.20/591,751.80 = 141,902.70/x
  3. Step 3: Cross multiply
    394,501.20x = 591,751.80 × 141,902.70
  4. Step 4: Simplify right side
    394,501.20x = 83,971,178,149.86
  5. Step 5: Solve for x
    x = 83,971,178,149.86/394,501.20
  6. Step 6: Final answer
    x = 212,854.05

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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.