Home / 213,579.30-320,335.32-71,423.48

Finding the Fourth Proportional to 213,579.30, 320,335.32 and 71,423.48

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Solution

The fourth proportional to 213,579.30, 320,335.32 and 71,423.48 is: 107,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,579.30 : 320,335.32 = 71,423.48 : x
  2. Step 2: Convert to fraction form
    213,579.30/320,335.32 = 71,423.48/x
  3. Step 3: Cross multiply
    213,579.30x = 320,335.32 × 71,423.48
  4. Step 4: Simplify right side
    213,579.30x = 22,879,463,321.31
  5. Step 5: Solve for x
    x = 22,879,463,321.31/213,579.30
  6. Step 6: Final answer
    x = 107,123.97

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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.