Home / 419,634.28-629,637.49-219,907.19

Finding the Fourth Proportional to 419,634.28, 629,637.49 and 219,907.19

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Solution

The fourth proportional to 419,634.28, 629,637.49 and 219,907.19 is: 329,958.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,634.28 : 629,637.49 = 219,907.19 : x
  2. Step 2: Convert to fraction form
    419,634.28/629,637.49 = 219,907.19/x
  3. Step 3: Cross multiply
    419,634.28x = 629,637.49 × 219,907.19
  4. Step 4: Simplify right side
    419,634.28x = 138,461,811,798.86
  5. Step 5: Solve for x
    x = 138,461,811,798.86/419,634.28
  6. Step 6: Final answer
    x = 329,958.29

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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.