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Finding the Fourth Proportional to 636,221.88, 953,972.49 and 209,642.04

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Solution

The fourth proportional to 636,221.88, 953,972.49 and 209,642.04 is: 314,344.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,221.88 : 953,972.49 = 209,642.04 : x
  2. Step 2: Convert to fraction form
    636,221.88/953,972.49 = 209,642.04/x
  3. Step 3: Cross multiply
    636,221.88x = 953,972.49 × 209,642.04
  4. Step 4: Simplify right side
    636,221.88x = 199,992,738,907.48
  5. Step 5: Solve for x
    x = 199,992,738,907.48/636,221.88
  6. Step 6: Final answer
    x = 314,344.33

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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.