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Finding the Fourth Proportional to 392,297.91, 541,355.18 and 222,528.39

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Solution

The fourth proportional to 392,297.91, 541,355.18 and 222,528.39 is: 307,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,297.91 : 541,355.18 = 222,528.39 : x
  2. Step 2: Convert to fraction form
    392,297.91/541,355.18 = 222,528.39/x
  3. Step 3: Cross multiply
    392,297.91x = 541,355.18 × 222,528.39
  4. Step 4: Simplify right side
    392,297.91x = 120,466,895,510.92
  5. Step 5: Solve for x
    x = 120,466,895,510.92/392,297.91
  6. Step 6: Final answer
    x = 307,080.14

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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.