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Finding the Fourth Proportional to 279,767.36, 419,651.07 and 80,088.47

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Solution

The fourth proportional to 279,767.36, 419,651.07 and 80,088.47 is: 120,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,767.36 : 419,651.07 = 80,088.47 : x
  2. Step 2: Convert to fraction form
    279,767.36/419,651.07 = 80,088.47/x
  3. Step 3: Cross multiply
    279,767.36x = 419,651.07 × 80,088.47
  4. Step 4: Simplify right side
    279,767.36x = 33,609,212,130.16
  5. Step 5: Solve for x
    x = 33,609,212,130.16/279,767.36
  6. Step 6: Final answer
    x = 120,132.71

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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.