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Finding the Fourth Proportional to 204,354.86, 306,528.75 and 91,955.54

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Solution

The fourth proportional to 204,354.86, 306,528.75 and 91,955.54 is: 137,931.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,354.86 : 306,528.75 = 91,955.54 : x
  2. Step 2: Convert to fraction form
    204,354.86/306,528.75 = 91,955.54/x
  3. Step 3: Cross multiply
    204,354.86x = 306,528.75 × 91,955.54
  4. Step 4: Simplify right side
    204,354.86x = 28,187,016,731.78
  5. Step 5: Solve for x
    x = 28,187,016,731.78/204,354.86
  6. Step 6: Final answer
    x = 137,931.72

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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.