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Finding the Fourth Proportional to 485,058.28, 669,291.60 and 270,193

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Solution

The fourth proportional to 485,058.28, 669,291.60 and 270,193 is: 372,816.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,058.28 : 669,291.60 = 270,193 : x
  2. Step 2: Convert to fraction form
    485,058.28/669,291.60 = 270,193/x
  3. Step 3: Cross multiply
    485,058.28x = 669,291.60 × 270,193
  4. Step 4: Simplify right side
    485,058.28x = 180,837,905,278.80
  5. Step 5: Solve for x
    x = 180,837,905,278.80/485,058.28
  6. Step 6: Final answer
    x = 372,816.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.