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Finding the Fourth Proportional to 191,687.28, 287,394.80 and 73,258.80

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Solution

The fourth proportional to 191,687.28, 287,394.80 and 73,258.80 is: 109,836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,687.28 : 287,394.80 = 73,258.80 : x
  2. Step 2: Convert to fraction form
    191,687.28/287,394.80 = 73,258.80/x
  3. Step 3: Cross multiply
    191,687.28x = 287,394.80 × 73,258.80
  4. Step 4: Simplify right side
    191,687.28x = 21,054,198,174.24
  5. Step 5: Solve for x
    x = 21,054,198,174.24/191,687.28
  6. Step 6: Final answer
    x = 109,836.18

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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.