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Finding the Fourth Proportional to 289,042.80, 433,542.60 and 120,519.60

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Solution

The fourth proportional to 289,042.80, 433,542.60 and 120,519.60 is: 180,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,042.80 : 433,542.60 = 120,519.60 : x
  2. Step 2: Convert to fraction form
    289,042.80/433,542.60 = 120,519.60/x
  3. Step 3: Cross multiply
    289,042.80x = 433,542.60 × 120,519.60
  4. Step 4: Simplify right side
    289,042.80x = 52,250,380,734.96
  5. Step 5: Solve for x
    x = 52,250,380,734.96/289,042.80
  6. Step 6: Final answer
    x = 180,770.39

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1.5x scale

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.