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Finding the Fourth Proportional to 208,371.96, 287,579.34 and 123,521.40

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Solution

The fourth proportional to 208,371.96, 287,579.34 and 123,521.40 is: 170,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,371.96 : 287,579.34 = 123,521.40 : x
  2. Step 2: Convert to fraction form
    208,371.96/287,579.34 = 123,521.40/x
  3. Step 3: Cross multiply
    208,371.96x = 287,579.34 × 123,521.40
  4. Step 4: Simplify right side
    208,371.96x = 35,522,202,687.88
  5. Step 5: Solve for x
    x = 35,522,202,687.88/208,371.96
  6. Step 6: Final answer
    x = 170,474.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.