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Finding the Fourth Proportional to 273,189.54, 377,239.49 and 171,390

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Solution

The fourth proportional to 273,189.54, 377,239.49 and 171,390 is: 236,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,189.54 : 377,239.49 = 171,390 : x
  2. Step 2: Convert to fraction form
    273,189.54/377,239.49 = 171,390/x
  3. Step 3: Cross multiply
    273,189.54x = 377,239.49 × 171,390
  4. Step 4: Simplify right side
    273,189.54x = 64,655,076,619.58
  5. Step 5: Solve for x
    x = 64,655,076,619.58/273,189.54
  6. Step 6: Final answer
    x = 236,667.47

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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.