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Finding the Fourth Proportional to 220,472, 330,708 and 54,260

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Solution

The fourth proportional to 220,472, 330,708 and 54,260 is: 81,390

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,472 : 330,708 = 54,260 : x
  2. Step 2: Convert to fraction form
    220,472/330,708 = 54,260/x
  3. Step 3: Cross multiply
    220,472x = 330,708 × 54,260
  4. Step 4: Simplify right side
    220,472x = 17,944,216,080
  5. Step 5: Solve for x
    x = 17,944,216,080/220,472
  6. Step 6: Final answer
    x = 81,390

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.