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Finding the Fourth Proportional to 279,133.08, 418,713.30 and 79,467.48

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Solution

The fourth proportional to 279,133.08, 418,713.30 and 79,467.48 is: 119,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,133.08 : 418,713.30 = 79,467.48 : x
  2. Step 2: Convert to fraction form
    279,133.08/418,713.30 = 79,467.48/x
  3. Step 3: Cross multiply
    279,133.08x = 418,713.30 × 79,467.48
  4. Step 4: Simplify right side
    279,133.08x = 33,274,090,793.48
  5. Step 5: Solve for x
    x = 33,274,090,793.48/279,133.08
  6. Step 6: Final answer
    x = 119,205.11

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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.