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Finding the Fourth Proportional to 217,770.80, 326,818.20 and 112,535.60

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Solution

The fourth proportional to 217,770.80, 326,818.20 and 112,535.60 is: 168,887.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,770.80 : 326,818.20 = 112,535.60 : x
  2. Step 2: Convert to fraction form
    217,770.80/326,818.20 = 112,535.60/x
  3. Step 3: Cross multiply
    217,770.80x = 326,818.20 × 112,535.60
  4. Step 4: Simplify right side
    217,770.80x = 36,778,682,227.92
  5. Step 5: Solve for x
    x = 36,778,682,227.92/217,770.80
  6. Step 6: Final answer
    x = 168,887.12

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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.