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Finding the Fourth Proportional to 279,526.65, 419,293.62 and 79,853.55

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Solution

The fourth proportional to 279,526.65, 419,293.62 and 79,853.55 is: 119,781.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,526.65 : 419,293.62 = 79,853.55 : x
  2. Step 2: Convert to fraction form
    279,526.65/419,293.62 = 79,853.55/x
  3. Step 3: Cross multiply
    279,526.65x = 419,293.62 × 79,853.55
  4. Step 4: Simplify right side
    279,526.65x = 33,482,084,049.35
  5. Step 5: Solve for x
    x = 33,482,084,049.35/279,526.65
  6. Step 6: Final answer
    x = 119,781.37

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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.