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Finding the Fourth Proportional to 255,713.31, 380,550.72 and 247,198.87

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Solution

The fourth proportional to 255,713.31, 380,550.72 and 247,198.87 is: 367,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,713.31 : 380,550.72 = 247,198.87 : x
  2. Step 2: Convert to fraction form
    255,713.31/380,550.72 = 247,198.87/x
  3. Step 3: Cross multiply
    255,713.31x = 380,550.72 × 247,198.87
  4. Step 4: Simplify right side
    255,713.31x = 94,071,709,364.37
  5. Step 5: Solve for x
    x = 94,071,709,364.37/255,713.31
  6. Step 6: Final answer
    x = 367,879.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.