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Finding the Fourth Proportional to 426,559.92, 639,330.96 and 198,548.88

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Solution

The fourth proportional to 426,559.92, 639,330.96 and 198,548.88 is: 297,586.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,559.92 : 639,330.96 = 198,548.88 : x
  2. Step 2: Convert to fraction form
    426,559.92/639,330.96 = 198,548.88/x
  3. Step 3: Cross multiply
    426,559.92x = 639,330.96 × 198,548.88
  4. Step 4: Simplify right side
    426,559.92x = 126,938,446,057.33
  5. Step 5: Solve for x
    x = 126,938,446,057.33/426,559.92
  6. Step 6: Final answer
    x = 297,586.44

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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.