Home / 213,328.08-320,024.52-80,217.54

Finding the Fourth Proportional to 213,328.08, 320,024.52 and 80,217.54

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Solution

The fourth proportional to 213,328.08, 320,024.52 and 80,217.54 is: 120,338.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,328.08 : 320,024.52 = 80,217.54 : x
  2. Step 2: Convert to fraction form
    213,328.08/320,024.52 = 80,217.54/x
  3. Step 3: Cross multiply
    213,328.08x = 320,024.52 × 80,217.54
  4. Step 4: Simplify right side
    213,328.08x = 25,671,579,734.08
  5. Step 5: Solve for x
    x = 25,671,579,734.08/213,328.08
  6. Step 6: Final answer
    x = 120,338.49

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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.