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Finding the Fourth Proportional to 265,129.20, 396,721.80 and 195,145.20

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Solution

The fourth proportional to 265,129.20, 396,721.80 and 195,145.20 is: 292,002.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,129.20 : 396,721.80 = 195,145.20 : x
  2. Step 2: Convert to fraction form
    265,129.20/396,721.80 = 195,145.20/x
  3. Step 3: Cross multiply
    265,129.20x = 396,721.80 × 195,145.20
  4. Step 4: Simplify right side
    265,129.20x = 77,418,355,005.36
  5. Step 5: Solve for x
    x = 77,418,355,005.36/265,129.20
  6. Step 6: Final answer
    x = 292,002.37

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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.