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Finding the Fourth Proportional to 419,645.79, 629,468.73 and 120,127.46

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Solution

The fourth proportional to 419,645.79, 629,468.73 and 120,127.46 is: 180,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,645.79 : 629,468.73 = 120,127.46 : x
  2. Step 2: Convert to fraction form
    419,645.79/629,468.73 = 120,127.46/x
  3. Step 3: Cross multiply
    419,645.79x = 629,468.73 × 120,127.46
  4. Step 4: Simplify right side
    419,645.79x = 75,616,476,536.98
  5. Step 5: Solve for x
    x = 75,616,476,536.98/419,645.79
  6. Step 6: Final answer
    x = 180,191.20

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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.