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Finding the Fourth Proportional to 218,822.80, 328,176.60 and 69,062.80

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Solution

The fourth proportional to 218,822.80, 328,176.60 and 69,062.80 is: 103,576.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,822.80 : 328,176.60 = 69,062.80 : x
  2. Step 2: Convert to fraction form
    218,822.80/328,176.60 = 69,062.80/x
  3. Step 3: Cross multiply
    218,822.80x = 328,176.60 × 69,062.80
  4. Step 4: Simplify right side
    218,822.80x = 22,664,794,890.48
  5. Step 5: Solve for x
    x = 22,664,794,890.48/218,822.80
  6. Step 6: Final answer
    x = 103,576.02

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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.