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Finding the Fourth Proportional to 398,584.40, 550,096.11 and 228,814.88

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Solution

The fourth proportional to 398,584.40, 550,096.11 and 228,814.88 is: 315,793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,584.40 : 550,096.11 = 228,814.88 : x
  2. Step 2: Convert to fraction form
    398,584.40/550,096.11 = 228,814.88/x
  3. Step 3: Cross multiply
    398,584.40x = 550,096.11 × 228,814.88
  4. Step 4: Simplify right side
    398,584.40x = 125,870,172,647.64
  5. Step 5: Solve for x
    x = 125,870,172,647.64/398,584.40
  6. Step 6: Final answer
    x = 315,793.03

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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.