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Finding the Fourth Proportional to 424,403.12, 636,604.84 and 108,860

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Solution

The fourth proportional to 424,403.12, 636,604.84 and 108,860 is: 163,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,403.12 : 636,604.84 = 108,860 : x
  2. Step 2: Convert to fraction form
    424,403.12/636,604.84 = 108,860/x
  3. Step 3: Cross multiply
    424,403.12x = 636,604.84 × 108,860
  4. Step 4: Simplify right side
    424,403.12x = 69,300,802,882.40
  5. Step 5: Solve for x
    x = 69,300,802,882.40/424,403.12
  6. Step 6: Final answer
    x = 163,290.04

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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.