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Finding the Fourth Proportional to 426,103.54, 639,156.22 and 173,205.54

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Solution

The fourth proportional to 426,103.54, 639,156.22 and 173,205.54 is: 259,808.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,103.54 : 639,156.22 = 173,205.54 : x
  2. Step 2: Convert to fraction form
    426,103.54/639,156.22 = 173,205.54/x
  3. Step 3: Cross multiply
    426,103.54x = 639,156.22 × 173,205.54
  4. Step 4: Simplify right side
    426,103.54x = 110,705,397,796.45
  5. Step 5: Solve for x
    x = 110,705,397,796.45/426,103.54
  6. Step 6: Final answer
    x = 259,808.68

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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.