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Finding the Fourth Proportional to 302,558.80, 453,838.20 and 80,942.80

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Solution

The fourth proportional to 302,558.80, 453,838.20 and 80,942.80 is: 121,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,558.80 : 453,838.20 = 80,942.80 : x
  2. Step 2: Convert to fraction form
    302,558.80/453,838.20 = 80,942.80/x
  3. Step 3: Cross multiply
    302,558.80x = 453,838.20 × 80,942.80
  4. Step 4: Simplify right side
    302,558.80x = 36,734,934,654.96
  5. Step 5: Solve for x
    x = 36,734,934,654.96/302,558.80
  6. Step 6: Final answer
    x = 121,414.20

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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.