Home / 274,459.36-378,986.40-172,517.64

Finding the Fourth Proportional to 274,459.36, 378,986.40 and 172,517.64

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Solution

The fourth proportional to 274,459.36, 378,986.40 and 172,517.64 is: 238,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,459.36 : 378,986.40 = 172,517.64 : x
  2. Step 2: Convert to fraction form
    274,459.36/378,986.40 = 172,517.64/x
  3. Step 3: Cross multiply
    274,459.36x = 378,986.40 × 172,517.64
  4. Step 4: Simplify right side
    274,459.36x = 65,381,839,320.10
  5. Step 5: Solve for x
    x = 65,381,839,320.10/274,459.36
  6. Step 6: Final answer
    x = 238,220.48

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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.