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Finding the Fourth Proportional to 257,404.80, 386,107.20 and 195,196.80

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Solution

The fourth proportional to 257,404.80, 386,107.20 and 195,196.80 is: 292,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,404.80 : 386,107.20 = 195,196.80 : x
  2. Step 2: Convert to fraction form
    257,404.80/386,107.20 = 195,196.80/x
  3. Step 3: Cross multiply
    257,404.80x = 386,107.20 × 195,196.80
  4. Step 4: Simplify right side
    257,404.80x = 75,366,889,896.96
  5. Step 5: Solve for x
    x = 75,366,889,896.96/257,404.80
  6. Step 6: Final answer
    x = 292,795.20

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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.