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Finding the Fourth Proportional to 376,191.15, 519,143.74 and 215,049.79

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Solution

The fourth proportional to 376,191.15, 519,143.74 and 215,049.79 is: 296,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,191.15 : 519,143.74 = 215,049.79 : x
  2. Step 2: Convert to fraction form
    376,191.15/519,143.74 = 215,049.79/x
  3. Step 3: Cross multiply
    376,191.15x = 519,143.74 × 215,049.79
  4. Step 4: Simplify right side
    376,191.15x = 111,641,752,266.82
  5. Step 5: Solve for x
    x = 111,641,752,266.82/376,191.15
  6. Step 6: Final answer
    x = 296,768.68

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1.5x scale

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.