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Finding the Fourth Proportional to 530,069.61, 731,515.17 and 303,758.85

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Solution

The fourth proportional to 530,069.61, 731,515.17 and 303,758.85 is: 419,198.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,069.61 : 731,515.17 = 303,758.85 : x
  2. Step 2: Convert to fraction form
    530,069.61/731,515.17 = 303,758.85/x
  3. Step 3: Cross multiply
    530,069.61x = 731,515.17 × 303,758.85
  4. Step 4: Simplify right side
    530,069.61x = 222,204,207,935.85
  5. Step 5: Solve for x
    x = 222,204,207,935.85/530,069.61
  6. Step 6: Final answer
    x = 419,198.17

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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.