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Finding the Fourth Proportional to 275,416.59, 380,091.65 and 154,565.61

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Solution

The fourth proportional to 275,416.59, 380,091.65 and 154,565.61 is: 213,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,416.59 : 380,091.65 = 154,565.61 : x
  2. Step 2: Convert to fraction form
    275,416.59/380,091.65 = 154,565.61/x
  3. Step 3: Cross multiply
    275,416.59x = 380,091.65 × 154,565.61
  4. Step 4: Simplify right side
    275,416.59x = 58,749,097,738.16
  5. Step 5: Solve for x
    x = 58,749,097,738.16/275,416.59
  6. Step 6: Final answer
    x = 213,309.95

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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.