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Finding the Fourth Proportional to 218,645.70, 327,968.55 and 70,901.70

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Solution

The fourth proportional to 218,645.70, 327,968.55 and 70,901.70 is: 106,352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,645.70 : 327,968.55 = 70,901.70 : x
  2. Step 2: Convert to fraction form
    218,645.70/327,968.55 = 70,901.70/x
  3. Step 3: Cross multiply
    218,645.70x = 327,968.55 × 70,901.70
  4. Step 4: Simplify right side
    218,645.70x = 23,253,527,741.54
  5. Step 5: Solve for x
    x = 23,253,527,741.54/218,645.70
  6. Step 6: Final answer
    x = 106,352.55

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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.