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Finding the Fourth Proportional to 383,677.80, 576,207.90 and 278,615.40

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Solution

The fourth proportional to 383,677.80, 576,207.90 and 278,615.40 is: 418,425.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,677.80 : 576,207.90 = 278,615.40 : x
  2. Step 2: Convert to fraction form
    383,677.80/576,207.90 = 278,615.40/x
  3. Step 3: Cross multiply
    383,677.80x = 576,207.90 × 278,615.40
  4. Step 4: Simplify right side
    383,677.80x = 160,540,394,541.66
  5. Step 5: Solve for x
    x = 160,540,394,541.66/383,677.80
  6. Step 6: Final answer
    x = 418,425.03

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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.