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Finding the Fourth Proportional to 144,862.80, 217,260.98 and 39,689.97

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Solution

The fourth proportional to 144,862.80, 217,260.98 and 39,689.97 is: 59,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,862.80 : 217,260.98 = 39,689.97 : x
  2. Step 2: Convert to fraction form
    144,862.80/217,260.98 = 39,689.97/x
  3. Step 3: Cross multiply
    144,862.80x = 217,260.98 × 39,689.97
  4. Step 4: Simplify right side
    144,862.80x = 8,623,081,579.92
  5. Step 5: Solve for x
    x = 8,623,081,579.92/144,862.80
  6. Step 6: Final answer
    x = 59,525.85

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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.