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Finding the Fourth Proportional to 483,238.91, 666,789.61 and 279,308.85

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Solution

The fourth proportional to 483,238.91, 666,789.61 and 279,308.85 is: 385,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,238.91 : 666,789.61 = 279,308.85 : x
  2. Step 2: Convert to fraction form
    483,238.91/666,789.61 = 279,308.85/x
  3. Step 3: Cross multiply
    483,238.91x = 666,789.61 × 279,308.85
  4. Step 4: Simplify right side
    483,238.91x = 186,240,239,161.05
  5. Step 5: Solve for x
    x = 186,240,239,161.05/483,238.91
  6. Step 6: Final answer
    x = 385,399.93

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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.