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Finding the Fourth Proportional to 448,902.45, 672,489.81 and 280,488.87

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Solution

The fourth proportional to 448,902.45, 672,489.81 and 280,488.87 is: 420,193.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,902.45 : 672,489.81 = 280,488.87 : x
  2. Step 2: Convert to fraction form
    448,902.45/672,489.81 = 280,488.87/x
  3. Step 3: Cross multiply
    448,902.45x = 672,489.81 × 280,488.87
  4. Step 4: Simplify right side
    448,902.45x = 188,625,906,893.42
  5. Step 5: Solve for x
    x = 188,625,906,893.42/448,902.45
  6. Step 6: Final answer
    x = 420,193.53

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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.