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Finding the Fourth Proportional to 376,189.14, 519,140.98 and 215,047.79

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Solution

The fourth proportional to 376,189.14, 519,140.98 and 215,047.79 is: 296,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,189.14 : 519,140.98 = 215,047.79 : x
  2. Step 2: Convert to fraction form
    376,189.14/519,140.98 = 215,047.79/x
  3. Step 3: Cross multiply
    376,189.14x = 519,140.98 × 215,047.79
  4. Step 4: Simplify right side
    376,189.14x = 111,640,120,447.43
  5. Step 5: Solve for x
    x = 111,640,120,447.43/376,189.14
  6. Step 6: Final answer
    x = 296,765.93

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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.