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Finding the Fourth Proportional to 323,711.28, 485,549.06 and 99,071.54

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Solution

The fourth proportional to 323,711.28, 485,549.06 and 99,071.54 is: 148,601.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,711.28 : 485,549.06 = 99,071.54 : x
  2. Step 2: Convert to fraction form
    323,711.28/485,549.06 = 99,071.54/x
  3. Step 3: Cross multiply
    323,711.28x = 485,549.06 × 99,071.54
  4. Step 4: Simplify right side
    323,711.28x = 48,104,093,119.75
  5. Step 5: Solve for x
    x = 48,104,093,119.75/323,711.28
  6. Step 6: Final answer
    x = 148,601.84

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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.