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Finding the Fourth Proportional to 204,429.80, 306,535.35 and 85,967.30

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Solution

The fourth proportional to 204,429.80, 306,535.35 and 85,967.30 is: 128,904.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,429.80 : 306,535.35 = 85,967.30 : x
  2. Step 2: Convert to fraction form
    204,429.80/306,535.35 = 85,967.30/x
  3. Step 3: Cross multiply
    204,429.80x = 306,535.35 × 85,967.30
  4. Step 4: Simplify right side
    204,429.80x = 26,352,016,394.06
  5. Step 5: Solve for x
    x = 26,352,016,394.06/204,429.80
  6. Step 6: Final answer
    x = 128,904.97

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1.5x scale

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.