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Finding the Fourth Proportional to 203,328.97, 305,077.10 and 89,418.15

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Solution

The fourth proportional to 203,328.97, 305,077.10 and 89,418.15 is: 134,164.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,328.97 : 305,077.10 = 89,418.15 : x
  2. Step 2: Convert to fraction form
    203,328.97/305,077.10 = 89,418.15/x
  3. Step 3: Cross multiply
    203,328.97x = 305,077.10 × 89,418.15
  4. Step 4: Simplify right side
    203,328.97x = 27,279,429,442.27
  5. Step 5: Solve for x
    x = 27,279,429,442.27/203,328.97
  6. Step 6: Final answer
    x = 134,164.01

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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.