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Finding the Fourth Proportional to 608,208, 839,352.96 and 339,936

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Solution

The fourth proportional to 608,208, 839,352.96 and 339,936 is: 469,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,208 : 839,352.96 = 339,936 : x
  2. Step 2: Convert to fraction form
    608,208/839,352.96 = 339,936/x
  3. Step 3: Cross multiply
    608,208x = 839,352.96 × 339,936
  4. Step 4: Simplify right side
    608,208x = 285,326,287,810.56
  5. Step 5: Solve for x
    x = 285,326,287,810.56/608,208
  6. Step 6: Final answer
    x = 469,126.17

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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.