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Finding the Fourth Proportional to 559,757.11, 839,138.54 and 218,121.43

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Solution

The fourth proportional to 559,757.11, 839,138.54 and 218,121.43 is: 326,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,757.11 : 839,138.54 = 218,121.43 : x
  2. Step 2: Convert to fraction form
    559,757.11/839,138.54 = 218,121.43/x
  3. Step 3: Cross multiply
    559,757.11x = 839,138.54 × 218,121.43
  4. Step 4: Simplify right side
    559,757.11x = 183,034,099,057.92
  5. Step 5: Solve for x
    x = 183,034,099,057.92/559,757.11
  6. Step 6: Final answer
    x = 326,988.43

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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.