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Finding the Fourth Proportional to 218,841.36, 328,297 and 92,482.80

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Solution

The fourth proportional to 218,841.36, 328,297 and 92,482.80 is: 138,738.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,841.36 : 328,297 = 92,482.80 : x
  2. Step 2: Convert to fraction form
    218,841.36/328,297 = 92,482.80/x
  3. Step 3: Cross multiply
    218,841.36x = 328,297 × 92,482.80
  4. Step 4: Simplify right side
    218,841.36x = 30,361,825,791.60
  5. Step 5: Solve for x
    x = 30,361,825,791.60/218,841.36
  6. Step 6: Final answer
    x = 138,738.97

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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.