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Finding the Fourth Proportional to 272,753.53, 409,194.66 and 85,765.03

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Solution

The fourth proportional to 272,753.53, 409,194.66 and 85,765.03 is: 128,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,753.53 : 409,194.66 = 85,765.03 : x
  2. Step 2: Convert to fraction form
    272,753.53/409,194.66 = 85,765.03/x
  3. Step 3: Cross multiply
    272,753.53x = 409,194.66 × 85,765.03
  4. Step 4: Simplify right side
    272,753.53x = 35,094,590,244.77
  5. Step 5: Solve for x
    x = 35,094,590,244.77/272,753.53
  6. Step 6: Final answer
    x = 128,667.78

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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.