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Finding the Fourth Proportional to 289,677.44, 399,336 and 203,373.92

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Solution

The fourth proportional to 289,677.44, 399,336 and 203,373.92 is: 280,361.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,677.44 : 399,336 = 203,373.92 : x
  2. Step 2: Convert to fraction form
    289,677.44/399,336 = 203,373.92/x
  3. Step 3: Cross multiply
    289,677.44x = 399,336 × 203,373.92
  4. Step 4: Simplify right side
    289,677.44x = 81,214,527,717.12
  5. Step 5: Solve for x
    x = 81,214,527,717.12/289,677.44
  6. Step 6: Final answer
    x = 280,361.94

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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.