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Finding the Fourth Proportional to 218,357.10, 327,550.77 and 85,193.10

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Solution

The fourth proportional to 218,357.10, 327,550.77 and 85,193.10 is: 127,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,357.10 : 327,550.77 = 85,193.10 : x
  2. Step 2: Convert to fraction form
    218,357.10/327,550.77 = 85,193.10/x
  3. Step 3: Cross multiply
    218,357.10x = 327,550.77 × 85,193.10
  4. Step 4: Simplify right side
    218,357.10x = 27,905,065,503.69
  5. Step 5: Solve for x
    x = 27,905,065,503.69/218,357.10
  6. Step 6: Final answer
    x = 127,795.55

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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.