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Finding the Fourth Proportional to 289,880.40, 434,626.20 and 132,027.60

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Solution

The fourth proportional to 289,880.40, 434,626.20 and 132,027.60 is: 197,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,880.40 : 434,626.20 = 132,027.60 : x
  2. Step 2: Convert to fraction form
    289,880.40/434,626.20 = 132,027.60/x
  3. Step 3: Cross multiply
    289,880.40x = 434,626.20 × 132,027.60
  4. Step 4: Simplify right side
    289,880.40x = 57,382,654,083.12
  5. Step 5: Solve for x
    x = 57,382,654,083.12/289,880.40
  6. Step 6: Final answer
    x = 197,952.86

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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.