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Finding the Fourth Proportional to 419,653.44, 629,666.19 and 219,926.34

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Solution

The fourth proportional to 419,653.44, 629,666.19 and 219,926.34 is: 329,987.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,653.44 : 629,666.19 = 219,926.34 : x
  2. Step 2: Convert to fraction form
    419,653.44/629,666.19 = 219,926.34/x
  3. Step 3: Cross multiply
    419,653.44x = 629,666.19 × 219,926.34
  4. Step 4: Simplify right side
    419,653.44x = 138,480,180,588.45
  5. Step 5: Solve for x
    x = 138,480,180,588.45/419,653.44
  6. Step 6: Final answer
    x = 329,987.00

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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.