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Finding the Fourth Proportional to 303,072.93, 418,069.39 and 189,698.85

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Solution

The fourth proportional to 303,072.93, 418,069.39 and 189,698.85 is: 261,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,072.93 : 418,069.39 = 189,698.85 : x
  2. Step 2: Convert to fraction form
    303,072.93/418,069.39 = 189,698.85/x
  3. Step 3: Cross multiply
    303,072.93x = 418,069.39 × 189,698.85
  4. Step 4: Simplify right side
    303,072.93x = 79,307,282,503.20
  5. Step 5: Solve for x
    x = 79,307,282,503.20/303,072.93
  6. Step 6: Final answer
    x = 261,677.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.