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Finding the Fourth Proportional to 608,138.28, 911,507.04 and 327,065.04

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Solution

The fourth proportional to 608,138.28, 911,507.04 and 327,065.04 is: 490,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,138.28 : 911,507.04 = 327,065.04 : x
  2. Step 2: Convert to fraction form
    608,138.28/911,507.04 = 327,065.04/x
  3. Step 3: Cross multiply
    608,138.28x = 911,507.04 × 327,065.04
  4. Step 4: Simplify right side
    608,138.28x = 298,122,086,497.88
  5. Step 5: Solve for x
    x = 298,122,086,497.88/608,138.28
  6. Step 6: Final answer
    x = 490,220.89

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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.