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Finding the Fourth Proportional to 204,059.40, 306,089.10 and 79,319.40

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Solution

The fourth proportional to 204,059.40, 306,089.10 and 79,319.40 is: 118,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,059.40 : 306,089.10 = 79,319.40 : x
  2. Step 2: Convert to fraction form
    204,059.40/306,089.10 = 79,319.40/x
  3. Step 3: Cross multiply
    204,059.40x = 306,089.10 × 79,319.40
  4. Step 4: Simplify right side
    204,059.40x = 24,278,803,758.54
  5. Step 5: Solve for x
    x = 24,278,803,758.54/204,059.40
  6. Step 6: Final answer
    x = 118,979.10

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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.