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Finding the Fourth Proportional to 218,937.28, 328,450.40 and 69,200.96

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Solution

The fourth proportional to 218,937.28, 328,450.40 and 69,200.96 is: 103,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,937.28 : 328,450.40 = 69,200.96 : x
  2. Step 2: Convert to fraction form
    218,937.28/328,450.40 = 69,200.96/x
  3. Step 3: Cross multiply
    218,937.28x = 328,450.40 × 69,200.96
  4. Step 4: Simplify right side
    218,937.28x = 22,729,082,992.38
  5. Step 5: Solve for x
    x = 22,729,082,992.38/218,937.28
  6. Step 6: Final answer
    x = 103,815.50

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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.