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Finding the Fourth Proportional to 279,326.60, 419,014.60 and 79,642.70

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Solution

The fourth proportional to 279,326.60, 419,014.60 and 79,642.70 is: 119,471.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,326.60 : 419,014.60 = 79,642.70 : x
  2. Step 2: Convert to fraction form
    279,326.60/419,014.60 = 79,642.70/x
  3. Step 3: Cross multiply
    279,326.60x = 419,014.60 × 79,642.70
  4. Step 4: Simplify right side
    279,326.60x = 33,371,454,083.42
  5. Step 5: Solve for x
    x = 33,371,454,083.42/279,326.60
  6. Step 6: Final answer
    x = 119,471.09

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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.