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Finding the Fourth Proportional to 239,571.81, 359,279.96 and 79,604.78

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Solution

The fourth proportional to 239,571.81, 359,279.96 and 79,604.78 is: 119,381.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,571.81 : 359,279.96 = 79,604.78 : x
  2. Step 2: Convert to fraction form
    239,571.81/359,279.96 = 79,604.78/x
  3. Step 3: Cross multiply
    239,571.81x = 359,279.96 × 79,604.78
  4. Step 4: Simplify right side
    239,571.81x = 28,600,399,979.79
  5. Step 5: Solve for x
    x = 28,600,399,979.79/239,571.81
  6. Step 6: Final answer
    x = 119,381.32

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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.