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Finding the Fourth Proportional to 297,793.40, 446,747.70 and 87,438.20

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Solution

The fourth proportional to 297,793.40, 446,747.70 and 87,438.20 is: 131,174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,793.40 : 446,747.70 = 87,438.20 : x
  2. Step 2: Convert to fraction form
    297,793.40/446,747.70 = 87,438.20/x
  3. Step 3: Cross multiply
    297,793.40x = 446,747.70 × 87,438.20
  4. Step 4: Simplify right side
    297,793.40x = 39,062,814,742.14
  5. Step 5: Solve for x
    x = 39,062,814,742.14/297,793.40
  6. Step 6: Final answer
    x = 131,174.21

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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.