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Finding the Fourth Proportional to 376,450.61, 519,353.66 and 215,219.03

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Solution

The fourth proportional to 376,450.61, 519,353.66 and 215,219.03 is: 296,917.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,450.61 : 519,353.66 = 215,219.03 : x
  2. Step 2: Convert to fraction form
    376,450.61/519,353.66 = 215,219.03/x
  3. Step 3: Cross multiply
    376,450.61x = 519,353.66 × 215,219.03
  4. Step 4: Simplify right side
    376,450.61x = 111,774,790,932.15
  5. Step 5: Solve for x
    x = 111,774,790,932.15/376,450.61
  6. Step 6: Final answer
    x = 296,917.54

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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.