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Finding the Fourth Proportional to 363,953.70, 545,930.55 and 313,215.30

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Solution

The fourth proportional to 363,953.70, 545,930.55 and 313,215.30 is: 469,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,953.70 : 545,930.55 = 313,215.30 : x
  2. Step 2: Convert to fraction form
    363,953.70/545,930.55 = 313,215.30/x
  3. Step 3: Cross multiply
    363,953.70x = 545,930.55 × 313,215.30
  4. Step 4: Simplify right side
    363,953.70x = 170,993,800,997.42
  5. Step 5: Solve for x
    x = 170,993,800,997.42/363,953.70
  6. Step 6: Final answer
    x = 469,822.95

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Similar ratio
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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.