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Finding the Fourth Proportional to 672,218.40, 1,008,716.40 and 251,536.80

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Solution

The fourth proportional to 672,218.40, 1,008,716.40 and 251,536.80 is: 377,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,218.40 : 1,008,716.40 = 251,536.80 : x
  2. Step 2: Convert to fraction form
    672,218.40/1,008,716.40 = 251,536.80/x
  3. Step 3: Cross multiply
    672,218.40x = 1,008,716.40 × 251,536.80
  4. Step 4: Simplify right side
    672,218.40x = 253,729,295,363.52
  5. Step 5: Solve for x
    x = 253,729,295,363.52/672,218.40
  6. Step 6: Final answer
    x = 377,450.68

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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.