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Finding the Fourth Proportional to 275,425.31, 379,991.25 and 173,459.17

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Solution

The fourth proportional to 275,425.31, 379,991.25 and 173,459.17 is: 239,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,425.31 : 379,991.25 = 173,459.17 : x
  2. Step 2: Convert to fraction form
    275,425.31/379,991.25 = 173,459.17/x
  3. Step 3: Cross multiply
    275,425.31x = 379,991.25 × 173,459.17
  4. Step 4: Simplify right side
    275,425.31x = 65,912,967,307.25
  5. Step 5: Solve for x
    x = 65,912,967,307.25/275,425.31
  6. Step 6: Final answer
    x = 239,313.40

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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.