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Finding the Fourth Proportional to 279,041.37, 418,552.67 and 121,269.84

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Solution

The fourth proportional to 279,041.37, 418,552.67 and 121,269.84 is: 181,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,041.37 : 418,552.67 = 121,269.84 : x
  2. Step 2: Convert to fraction form
    279,041.37/418,552.67 = 121,269.84/x
  3. Step 3: Cross multiply
    279,041.37x = 418,552.67 × 121,269.84
  4. Step 4: Simplify right side
    279,041.37x = 50,757,814,716.12
  5. Step 5: Solve for x
    x = 50,757,814,716.12/279,041.37
  6. Step 6: Final answer
    x = 181,900.68

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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.