Home / 257,965.20-386,947.80-194,979.60

Finding the Fourth Proportional to 257,965.20, 386,947.80 and 194,979.60

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Solution

The fourth proportional to 257,965.20, 386,947.80 and 194,979.60 is: 292,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,965.20 : 386,947.80 = 194,979.60 : x
  2. Step 2: Convert to fraction form
    257,965.20/386,947.80 = 194,979.60/x
  3. Step 3: Cross multiply
    257,965.20x = 386,947.80 × 194,979.60
  4. Step 4: Simplify right side
    257,965.20x = 75,446,927,264.88
  5. Step 5: Solve for x
    x = 75,446,927,264.88/257,965.20
  6. Step 6: Final answer
    x = 292,469.40

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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.