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Finding the Fourth Proportional to 213,658.48, 320,490.78 and 63,863.56

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Solution

The fourth proportional to 213,658.48, 320,490.78 and 63,863.56 is: 95,796.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,658.48 : 320,490.78 = 63,863.56 : x
  2. Step 2: Convert to fraction form
    213,658.48/320,490.78 = 63,863.56/x
  3. Step 3: Cross multiply
    213,658.48x = 320,490.78 × 63,863.56
  4. Step 4: Simplify right side
    213,658.48x = 20,467,682,157.98
  5. Step 5: Solve for x
    x = 20,467,682,157.98/213,658.48
  6. Step 6: Final answer
    x = 95,796.25

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1.5x scale

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.