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Finding the Fourth Proportional to 391,932.46, 540,866.38 and 222,166.59

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Solution

The fourth proportional to 391,932.46, 540,866.38 and 222,166.59 is: 306,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,932.46 : 540,866.38 = 222,166.59 : x
  2. Step 2: Convert to fraction form
    391,932.46/540,866.38 = 222,166.59/x
  3. Step 3: Cross multiply
    391,932.46x = 540,866.38 × 222,166.59
  4. Step 4: Simplify right side
    391,932.46x = 120,162,439,290.24
  5. Step 5: Solve for x
    x = 120,162,439,290.24/391,932.46
  6. Step 6: Final answer
    x = 306,589.66

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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.