Home / 213,456.08-320,184.11-80,366.19

Finding the Fourth Proportional to 213,456.08, 320,184.11 and 80,366.19

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Solution

The fourth proportional to 213,456.08, 320,184.11 and 80,366.19 is: 120,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,456.08 : 320,184.11 = 80,366.19 : x
  2. Step 2: Convert to fraction form
    213,456.08/320,184.11 = 80,366.19/x
  3. Step 3: Cross multiply
    213,456.08x = 320,184.11 × 80,366.19
  4. Step 4: Simplify right side
    213,456.08x = 25,731,977,220.16
  5. Step 5: Solve for x
    x = 25,731,977,220.16/213,456.08
  6. Step 6: Final answer
    x = 120,549.29

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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.