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Finding the Fourth Proportional to 436,518.36, 654,891.48 and 137,008.44

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Solution

The fourth proportional to 436,518.36, 654,891.48 and 137,008.44 is: 205,548.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,518.36 : 654,891.48 = 137,008.44 : x
  2. Step 2: Convert to fraction form
    436,518.36/654,891.48 = 137,008.44/x
  3. Step 3: Cross multiply
    436,518.36x = 654,891.48 × 137,008.44
  4. Step 4: Simplify right side
    436,518.36x = 89,725,660,044.09
  5. Step 5: Solve for x
    x = 89,725,660,044.09/436,518.36
  6. Step 6: Final answer
    x = 205,548.42

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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.