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Finding the Fourth Proportional to 275,059.20, 412,531.20 and 134,918.40

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Solution

The fourth proportional to 275,059.20, 412,531.20 and 134,918.40 is: 202,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,059.20 : 412,531.20 = 134,918.40 : x
  2. Step 2: Convert to fraction form
    275,059.20/412,531.20 = 134,918.40/x
  3. Step 3: Cross multiply
    275,059.20x = 412,531.20 × 134,918.40
  4. Step 4: Simplify right side
    275,059.20x = 55,658,049,454.08
  5. Step 5: Solve for x
    x = 55,658,049,454.08/275,059.20
  6. Step 6: Final answer
    x = 202,349.35

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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.