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Finding the Fourth Proportional to 391,859.94, 587,222.60 and 270,155.55

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Solution

The fourth proportional to 391,859.94, 587,222.60 and 270,155.55 is: 404,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,859.94 : 587,222.60 = 270,155.55 : x
  2. Step 2: Convert to fraction form
    391,859.94/587,222.60 = 270,155.55/x
  3. Step 3: Cross multiply
    391,859.94x = 587,222.60 × 270,155.55
  4. Step 4: Simplify right side
    391,859.94x = 158,641,446,466.46
  5. Step 5: Solve for x
    x = 158,641,446,466.46/391,859.94
  6. Step 6: Final answer
    x = 404,842.22

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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.