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Finding the Fourth Proportional to 185,222, 255,606.36 and 100,339.04

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Solution

The fourth proportional to 185,222, 255,606.36 and 100,339.04 is: 138,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,222 : 255,606.36 = 100,339.04 : x
  2. Step 2: Convert to fraction form
    185,222/255,606.36 = 100,339.04/x
  3. Step 3: Cross multiply
    185,222x = 255,606.36 × 100,339.04
  4. Step 4: Simplify right side
    185,222x = 25,647,296,780.29
  5. Step 5: Solve for x
    x = 25,647,296,780.29/185,222
  6. Step 6: Final answer
    x = 138,467.88

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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.