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Finding the Fourth Proportional to 327,299.85, 490,894.05 and 90,587.07

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Solution

The fourth proportional to 327,299.85, 490,894.05 and 90,587.07 is: 135,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,299.85 : 490,894.05 = 90,587.07 : x
  2. Step 2: Convert to fraction form
    327,299.85/490,894.05 = 90,587.07/x
  3. Step 3: Cross multiply
    327,299.85x = 490,894.05 × 90,587.07
  4. Step 4: Simplify right side
    327,299.85x = 44,468,653,669.93
  5. Step 5: Solve for x
    x = 44,468,653,669.93/327,299.85
  6. Step 6: Final answer
    x = 135,865.18

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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.