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Finding the Fourth Proportional to 205,862.18, 308,579.19 and 79,589.16

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Solution

The fourth proportional to 205,862.18, 308,579.19 and 79,589.16 is: 119,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,862.18 : 308,579.19 = 79,589.16 : x
  2. Step 2: Convert to fraction form
    205,862.18/308,579.19 = 79,589.16/x
  3. Step 3: Cross multiply
    205,862.18x = 308,579.19 × 79,589.16
  4. Step 4: Simplify right side
    205,862.18x = 24,559,558,525.58
  5. Step 5: Solve for x
    x = 24,559,558,525.58/205,862.18
  6. Step 6: Final answer
    x = 119,300.97

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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.