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Finding the Fourth Proportional to 274,383.72, 378,708.66 and 166,988.28

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Solution

The fourth proportional to 274,383.72, 378,708.66 and 166,988.28 is: 230,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,383.72 : 378,708.66 = 166,988.28 : x
  2. Step 2: Convert to fraction form
    274,383.72/378,708.66 = 166,988.28/x
  3. Step 3: Cross multiply
    274,383.72x = 378,708.66 × 166,988.28
  4. Step 4: Simplify right side
    274,383.72x = 63,239,907,754.50
  5. Step 5: Solve for x
    x = 63,239,907,754.50/274,383.72
  6. Step 6: Final answer
    x = 230,479.81

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1.5x scale

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.