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Finding the Fourth Proportional to 272,706.63, 409,104.26 and 80,600.55

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Solution

The fourth proportional to 272,706.63, 409,104.26 and 80,600.55 is: 120,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,706.63 : 409,104.26 = 80,600.55 : x
  2. Step 2: Convert to fraction form
    272,706.63/409,104.26 = 80,600.55/x
  3. Step 3: Cross multiply
    272,706.63x = 409,104.26 × 80,600.55
  4. Step 4: Simplify right side
    272,706.63x = 32,974,028,363.34
  5. Step 5: Solve for x
    x = 32,974,028,363.34/272,706.63
  6. Step 6: Final answer
    x = 120,913.92

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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.