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Finding the Fourth Proportional to 213,369.99, 320,255.87 and 108,264.39

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Solution

The fourth proportional to 213,369.99, 320,255.87 and 108,264.39 is: 162,498.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,369.99 : 320,255.87 = 108,264.39 : x
  2. Step 2: Convert to fraction form
    213,369.99/320,255.87 = 108,264.39/x
  3. Step 3: Cross multiply
    213,369.99x = 320,255.87 × 108,264.39
  4. Step 4: Simplify right side
    213,369.99x = 34,672,305,868.15
  5. Step 5: Solve for x
    x = 34,672,305,868.15/213,369.99
  6. Step 6: Final answer
    x = 162,498.51

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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.