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Finding the Fourth Proportional to 271,432.40, 407,148.60 and 204,072.80

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Solution

The fourth proportional to 271,432.40, 407,148.60 and 204,072.80 is: 306,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,432.40 : 407,148.60 = 204,072.80 : x
  2. Step 2: Convert to fraction form
    271,432.40/407,148.60 = 204,072.80/x
  3. Step 3: Cross multiply
    271,432.40x = 407,148.60 × 204,072.80
  4. Step 4: Simplify right side
    271,432.40x = 83,087,954,818.08
  5. Step 5: Solve for x
    x = 83,087,954,818.08/271,432.40
  6. Step 6: Final answer
    x = 306,109.20

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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.