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Finding the Fourth Proportional to 298,793.55, 448,445.48 and 121,427.85

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Solution

The fourth proportional to 298,793.55, 448,445.48 and 121,427.85 is: 182,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,793.55 : 448,445.48 = 121,427.85 : x
  2. Step 2: Convert to fraction form
    298,793.55/448,445.48 = 121,427.85/x
  3. Step 3: Cross multiply
    298,793.55x = 448,445.48 × 121,427.85
  4. Step 4: Simplify right side
    298,793.55x = 54,453,769,871.48
  5. Step 5: Solve for x
    x = 54,453,769,871.48/298,793.55
  6. Step 6: Final answer
    x = 182,245.47

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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.