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Finding the Fourth Proportional to 381,651.40, 572,477.10 and 222,219.10

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Solution

The fourth proportional to 381,651.40, 572,477.10 and 222,219.10 is: 333,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,651.40 : 572,477.10 = 222,219.10 : x
  2. Step 2: Convert to fraction form
    381,651.40/572,477.10 = 222,219.10/x
  3. Step 3: Cross multiply
    381,651.40x = 572,477.10 × 222,219.10
  4. Step 4: Simplify right side
    381,651.40x = 127,215,345,932.61
  5. Step 5: Solve for x
    x = 127,215,345,932.61/381,651.40
  6. Step 6: Final answer
    x = 333,328.65

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Similar ratio
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1.5x scale

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.