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Finding the Fourth Proportional to 327,355.68, 491,034.17 and 90,699

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Solution

The fourth proportional to 327,355.68, 491,034.17 and 90,699 is: 136,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,355.68 : 491,034.17 = 90,699 : x
  2. Step 2: Convert to fraction form
    327,355.68/491,034.17 = 90,699/x
  3. Step 3: Cross multiply
    327,355.68x = 491,034.17 × 90,699
  4. Step 4: Simplify right side
    327,355.68x = 44,536,308,184.83
  5. Step 5: Solve for x
    x = 44,536,308,184.83/327,355.68
  6. Step 6: Final answer
    x = 136,048.68

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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.