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Finding the Fourth Proportional to 279,716.14, 419,867.70 and 247,898.77

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Solution

The fourth proportional to 279,716.14, 419,867.70 and 247,898.77 is: 372,108.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,716.14 : 419,867.70 = 247,898.77 : x
  2. Step 2: Convert to fraction form
    279,716.14/419,867.70 = 247,898.77/x
  3. Step 3: Cross multiply
    279,716.14x = 419,867.70 × 247,898.77
  4. Step 4: Simplify right side
    279,716.14x = 104,084,685,807.87
  5. Step 5: Solve for x
    x = 104,084,685,807.87/279,716.14
  6. Step 6: Final answer
    x = 372,108.26

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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.