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Finding the Fourth Proportional to 218,086.20, 326,886.30 and 84,922.20

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Solution

The fourth proportional to 218,086.20, 326,886.30 and 84,922.20 is: 127,288.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,086.20 : 326,886.30 = 84,922.20 : x
  2. Step 2: Convert to fraction form
    218,086.20/326,886.30 = 84,922.20/x
  3. Step 3: Cross multiply
    218,086.20x = 326,886.30 × 84,922.20
  4. Step 4: Simplify right side
    218,086.20x = 27,759,903,745.86
  5. Step 5: Solve for x
    x = 27,759,903,745.86/218,086.20
  6. Step 6: Final answer
    x = 127,288.68

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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.