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Finding the Fourth Proportional to 381,143.73, 571,598.55 and 263,570.61

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Solution

The fourth proportional to 381,143.73, 571,598.55 and 263,570.61 is: 395,274.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,143.73 : 571,598.55 = 263,570.61 : x
  2. Step 2: Convert to fraction form
    381,143.73/571,598.55 = 263,570.61/x
  3. Step 3: Cross multiply
    381,143.73x = 571,598.55 × 263,570.61
  4. Step 4: Simplify right side
    381,143.73x = 150,656,578,498.62
  5. Step 5: Solve for x
    x = 150,656,578,498.62/381,143.73
  6. Step 6: Final answer
    x = 395,274.98

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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.