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Finding the Fourth Proportional to 243,498.44, 365,353.26 and 85,839.56

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Solution

The fourth proportional to 243,498.44, 365,353.26 and 85,839.56 is: 128,796.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,498.44 : 365,353.26 = 85,839.56 : x
  2. Step 2: Convert to fraction form
    243,498.44/365,353.26 = 85,839.56/x
  3. Step 3: Cross multiply
    243,498.44x = 365,353.26 × 85,839.56
  4. Step 4: Simplify right side
    243,498.44x = 31,361,763,082.97
  5. Step 5: Solve for x
    x = 31,361,763,082.97/243,498.44
  6. Step 6: Final answer
    x = 128,796.57

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1.5x scale

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.