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Finding the Fourth Proportional to 394,005.54, 543,754.10 and 219,602.88

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Solution

The fourth proportional to 394,005.54, 543,754.10 and 219,602.88 is: 303,066.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,005.54 : 543,754.10 = 219,602.88 : x
  2. Step 2: Convert to fraction form
    394,005.54/543,754.10 = 219,602.88/x
  3. Step 3: Cross multiply
    394,005.54x = 543,754.10 × 219,602.88
  4. Step 4: Simplify right side
    394,005.54x = 119,409,965,273.79
  5. Step 5: Solve for x
    x = 119,409,965,273.79/394,005.54
  6. Step 6: Final answer
    x = 303,066.72

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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.