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Finding the Fourth Proportional to 397,064.92, 547,947.79 and 215,773.42

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Solution

The fourth proportional to 397,064.92, 547,947.79 and 215,773.42 is: 297,766.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,064.92 : 547,947.79 = 215,773.42 : x
  2. Step 2: Convert to fraction form
    397,064.92/547,947.79 = 215,773.42/x
  3. Step 3: Cross multiply
    397,064.92x = 547,947.79 × 215,773.42
  4. Step 4: Simplify right side
    397,064.92x = 118,232,569,584.39
  5. Step 5: Solve for x
    x = 118,232,569,584.39/397,064.92
  6. Step 6: Final answer
    x = 297,766.34

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1.5x scale

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.