Home / 213,625.72-320,456.78-55,853.92

Finding the Fourth Proportional to 213,625.72, 320,456.78 and 55,853.92

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Solution

The fourth proportional to 213,625.72, 320,456.78 and 55,853.92 is: 83,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,625.72 : 320,456.78 = 55,853.92 : x
  2. Step 2: Convert to fraction form
    213,625.72/320,456.78 = 55,853.92/x
  3. Step 3: Cross multiply
    213,625.72x = 320,456.78 × 55,853.92
  4. Step 4: Simplify right side
    213,625.72x = 17,898,767,353.58
  5. Step 5: Solve for x
    x = 17,898,767,353.58/213,625.72
  6. Step 6: Final answer
    x = 83,785.64

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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.