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Finding the Fourth Proportional to 205,863.80, 308,581.60 and 79,590.77

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Solution

The fourth proportional to 205,863.80, 308,581.60 and 79,590.77 is: 119,303.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,863.80 : 308,581.60 = 79,590.77 : x
  2. Step 2: Convert to fraction form
    205,863.80/308,581.60 = 79,590.77/x
  3. Step 3: Cross multiply
    205,863.80x = 308,581.60 × 79,590.77
  4. Step 4: Simplify right side
    205,863.80x = 24,560,247,151.83
  5. Step 5: Solve for x
    x = 24,560,247,151.83/205,863.80
  6. Step 6: Final answer
    x = 119,303.38

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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.