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Finding the Fourth Proportional to 186,379.57, 279,578.54 and 53,279.29

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Solution

The fourth proportional to 186,379.57, 279,578.54 and 53,279.29 is: 79,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,379.57 : 279,578.54 = 53,279.29 : x
  2. Step 2: Convert to fraction form
    186,379.57/279,578.54 = 53,279.29/x
  3. Step 3: Cross multiply
    186,379.57x = 279,578.54 × 53,279.29
  4. Step 4: Simplify right side
    186,379.57x = 14,895,746,110.44
  5. Step 5: Solve for x
    x = 14,895,746,110.44/186,379.57
  6. Step 6: Final answer
    x = 79,921.56

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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.