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Finding the Fourth Proportional to 376,247.45, 519,073.67 and 215,016

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Solution

The fourth proportional to 376,247.45, 519,073.67 and 215,016 is: 296,637.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,247.45 : 519,073.67 = 215,016 : x
  2. Step 2: Convert to fraction form
    376,247.45/519,073.67 = 215,016/x
  3. Step 3: Cross multiply
    376,247.45x = 519,073.67 × 215,016
  4. Step 4: Simplify right side
    376,247.45x = 111,609,144,228.72
  5. Step 5: Solve for x
    x = 111,609,144,228.72/376,247.45
  6. Step 6: Final answer
    x = 296,637.61

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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.