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Finding the Fourth Proportional to 636,990.75, 955,633.77 and 216,266.63

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Solution

The fourth proportional to 636,990.75, 955,633.77 and 216,266.63 is: 324,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,990.75 : 955,633.77 = 216,266.63 : x
  2. Step 2: Convert to fraction form
    636,990.75/955,633.77 = 216,266.63/x
  3. Step 3: Cross multiply
    636,990.75x = 955,633.77 × 216,266.63
  4. Step 4: Simplify right side
    636,990.75x = 206,671,690,173.93
  5. Step 5: Solve for x
    x = 206,671,690,173.93/636,990.75
  6. Step 6: Final answer
    x = 324,450.06

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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.