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Finding the Fourth Proportional to 279,509.54, 418,914.38 and 220,110.62

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Solution

The fourth proportional to 279,509.54, 418,914.38 and 220,110.62 is: 329,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,509.54 : 418,914.38 = 220,110.62 : x
  2. Step 2: Convert to fraction form
    279,509.54/418,914.38 = 220,110.62/x
  3. Step 3: Cross multiply
    279,509.54x = 418,914.38 × 220,110.62
  4. Step 4: Simplify right side
    279,509.54x = 92,207,502,364.42
  5. Step 5: Solve for x
    x = 92,207,502,364.42/279,509.54
  6. Step 6: Final answer
    x = 329,890.36

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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.