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Finding the Fourth Proportional to 200,505.59, 300,734.97 and 80,557.68

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Solution

The fourth proportional to 200,505.59, 300,734.97 and 80,557.68 is: 120,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,505.59 : 300,734.97 = 80,557.68 : x
  2. Step 2: Convert to fraction form
    200,505.59/300,734.97 = 80,557.68/x
  3. Step 3: Cross multiply
    200,505.59x = 300,734.97 × 80,557.68
  4. Step 4: Simplify right side
    200,505.59x = 24,226,511,075.28
  5. Step 5: Solve for x
    x = 24,226,511,075.28/200,505.59
  6. Step 6: Final answer
    x = 120,827.11

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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.