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Finding the Fourth Proportional to 327,599.48, 491,401.95 and 90,960.61

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Solution

The fourth proportional to 327,599.48, 491,401.95 and 90,960.61 is: 136,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,599.48 : 491,401.95 = 90,960.61 : x
  2. Step 2: Convert to fraction form
    327,599.48/491,401.95 = 90,960.61/x
  3. Step 3: Cross multiply
    327,599.48x = 491,401.95 × 90,960.61
  4. Step 4: Simplify right side
    327,599.48x = 44,698,221,127.19
  5. Step 5: Solve for x
    x = 44,698,221,127.19/327,599.48
  6. Step 6: Final answer
    x = 136,441.67

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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.