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Finding the Fourth Proportional to 381,894.69, 572,645.21 and 262,134.57

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Solution

The fourth proportional to 381,894.69, 572,645.21 and 262,134.57 is: 393,066.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,894.69 : 572,645.21 = 262,134.57 : x
  2. Step 2: Convert to fraction form
    381,894.69/572,645.21 = 262,134.57/x
  3. Step 3: Cross multiply
    381,894.69x = 572,645.21 × 262,134.57
  4. Step 4: Simplify right side
    381,894.69x = 150,110,104,575.24
  5. Step 5: Solve for x
    x = 150,110,104,575.24/381,894.69
  6. Step 6: Final answer
    x = 393,066.75

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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.