Home / 279,640.11-385,771.32-189,027.66

Finding the Fourth Proportional to 279,640.11, 385,771.32 and 189,027.66

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Solution

The fourth proportional to 279,640.11, 385,771.32 and 189,027.66 is: 260,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,640.11 : 385,771.32 = 189,027.66 : x
  2. Step 2: Convert to fraction form
    279,640.11/385,771.32 = 189,027.66/x
  3. Step 3: Cross multiply
    279,640.11x = 385,771.32 × 189,027.66
  4. Step 4: Simplify right side
    279,640.11x = 72,921,449,914.71
  5. Step 5: Solve for x
    x = 72,921,449,914.71/279,640.11
  6. Step 6: Final answer
    x = 260,768.92

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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.