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Finding the Fourth Proportional to 269,801.61, 372,321.63 and 148,939.80

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Solution

The fourth proportional to 269,801.61, 372,321.63 and 148,939.80 is: 205,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,801.61 : 372,321.63 = 148,939.80 : x
  2. Step 2: Convert to fraction form
    269,801.61/372,321.63 = 148,939.80/x
  3. Step 3: Cross multiply
    269,801.61x = 372,321.63 × 148,939.80
  4. Step 4: Simplify right side
    269,801.61x = 55,453,509,107.87
  5. Step 5: Solve for x
    x = 55,453,509,107.87/269,801.61
  6. Step 6: Final answer
    x = 205,534.39

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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.