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Finding the Fourth Proportional to 610,454.97, 915,813.69 and 205,687.41

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Solution

The fourth proportional to 610,454.97, 915,813.69 and 205,687.41 is: 308,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,454.97 : 915,813.69 = 205,687.41 : x
  2. Step 2: Convert to fraction form
    610,454.97/915,813.69 = 205,687.41/x
  3. Step 3: Cross multiply
    610,454.97x = 915,813.69 × 205,687.41
  4. Step 4: Simplify right side
    610,454.97x = 188,371,345,938.64
  5. Step 5: Solve for x
    x = 188,371,345,938.64/610,454.97
  6. Step 6: Final answer
    x = 308,575.33

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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.