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Finding the Fourth Proportional to 329,909.55, 494,864.33 and 211,811.55

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Solution

The fourth proportional to 329,909.55, 494,864.33 and 211,811.55 is: 317,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,909.55 : 494,864.33 = 211,811.55 : x
  2. Step 2: Convert to fraction form
    329,909.55/494,864.33 = 211,811.55/x
  3. Step 3: Cross multiply
    329,909.55x = 494,864.33 × 211,811.55
  4. Step 4: Simplify right side
    329,909.55x = 104,817,979,717.95
  5. Step 5: Solve for x
    x = 104,817,979,717.95/329,909.55
  6. Step 6: Final answer
    x = 317,717.33

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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.