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Finding the Fourth Proportional to 203,911.52, 306,054.08 and 109,248.56

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Solution

The fourth proportional to 203,911.52, 306,054.08 and 109,248.56 is: 163,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,911.52 : 306,054.08 = 109,248.56 : x
  2. Step 2: Convert to fraction form
    203,911.52/306,054.08 = 109,248.56/x
  3. Step 3: Cross multiply
    203,911.52x = 306,054.08 × 109,248.56
  4. Step 4: Simplify right side
    203,911.52x = 33,435,967,522.12
  5. Step 5: Solve for x
    x = 33,435,967,522.12/203,911.52
  6. Step 6: Final answer
    x = 163,972.92

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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.