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Finding the Fourth Proportional to 279,362.36, 418,974.11 and 79,684.46

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Solution

The fourth proportional to 279,362.36, 418,974.11 and 79,684.46 is: 119,506.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,362.36 : 418,974.11 = 79,684.46 : x
  2. Step 2: Convert to fraction form
    279,362.36/418,974.11 = 79,684.46/x
  3. Step 3: Cross multiply
    279,362.36x = 418,974.11 × 79,684.46
  4. Step 4: Simplify right side
    279,362.36x = 33,385,725,310.91
  5. Step 5: Solve for x
    x = 33,385,725,310.91/279,362.36
  6. Step 6: Final answer
    x = 119,506.89

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1.5x scale

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.