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Finding the Fourth Proportional to 275,156.64, 379,555.25 and 173,020.40

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Solution

The fourth proportional to 275,156.64, 379,555.25 and 173,020.40 is: 238,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,156.64 : 379,555.25 = 173,020.40 : x
  2. Step 2: Convert to fraction form
    275,156.64/379,555.25 = 173,020.40/x
  3. Step 3: Cross multiply
    275,156.64x = 379,555.25 × 173,020.40
  4. Step 4: Simplify right side
    275,156.64x = 65,670,801,177.10
  5. Step 5: Solve for x
    x = 65,670,801,177.10/275,156.64
  6. Step 6: Final answer
    x = 238,666.97

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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.