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Finding the Fourth Proportional to 253,292.65, 379,439.69 and 205,961.17

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Solution

The fourth proportional to 253,292.65, 379,439.69 and 205,961.17 is: 308,535.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,292.65 : 379,439.69 = 205,961.17 : x
  2. Step 2: Convert to fraction form
    253,292.65/379,439.69 = 205,961.17/x
  3. Step 3: Cross multiply
    253,292.65x = 379,439.69 × 205,961.17
  4. Step 4: Simplify right side
    253,292.65x = 78,149,842,496.84
  5. Step 5: Solve for x
    x = 78,149,842,496.84/253,292.65
  6. Step 6: Final answer
    x = 308,535.77

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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.