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Finding the Fourth Proportional to 451,715.00, 677,540.80 and 211,881.52

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Solution

The fourth proportional to 451,715.00, 677,540.80 and 211,881.52 is: 317,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,715.00 : 677,540.80 = 211,881.52 : x
  2. Step 2: Convert to fraction form
    451,715.00/677,540.80 = 211,881.52/x
  3. Step 3: Cross multiply
    451,715.00x = 677,540.80 × 211,881.52
  4. Step 4: Simplify right side
    451,715.00x = 143,558,375,677.79
  5. Step 5: Solve for x
    x = 143,558,375,677.79/451,715.00
  6. Step 6: Final answer
    x = 317,807.42

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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.