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Finding the Fourth Proportional to 371,872.09, 557,059.65 and 171,917.11

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Solution

The fourth proportional to 371,872.09, 557,059.65 and 171,917.11 is: 257,529.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,872.09 : 557,059.65 = 171,917.11 : x
  2. Step 2: Convert to fraction form
    371,872.09/557,059.65 = 171,917.11/x
  3. Step 3: Cross multiply
    371,872.09x = 557,059.65 × 171,917.11
  4. Step 4: Simplify right side
    371,872.09x = 95,768,085,125.61
  5. Step 5: Solve for x
    x = 95,768,085,125.61/371,872.09
  6. Step 6: Final answer
    x = 257,529.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.