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Finding the Fourth Proportional to 218,800.68, 328,201.08 and 69,052.64

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Solution

The fourth proportional to 218,800.68, 328,201.08 and 69,052.64 is: 103,578.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,800.68 : 328,201.08 = 69,052.64 : x
  2. Step 2: Convert to fraction form
    218,800.68/328,201.08 = 69,052.64/x
  3. Step 3: Cross multiply
    218,800.68x = 328,201.08 × 69,052.64
  4. Step 4: Simplify right side
    218,800.68x = 22,663,151,024.85
  5. Step 5: Solve for x
    x = 22,663,151,024.85/218,800.68
  6. Step 6: Final answer
    x = 103,578.98

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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.