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Finding the Fourth Proportional to 667,093.92, 920,582.80 and 361,162.20

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Solution

The fourth proportional to 667,093.92, 920,582.80 and 361,162.20 is: 498,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,093.92 : 920,582.80 = 361,162.20 : x
  2. Step 2: Convert to fraction form
    667,093.92/920,582.80 = 361,162.20/x
  3. Step 3: Cross multiply
    667,093.92x = 920,582.80 × 361,162.20
  4. Step 4: Simplify right side
    667,093.92x = 332,479,709,330.16
  5. Step 5: Solve for x
    x = 332,479,709,330.16/667,093.92
  6. Step 6: Final answer
    x = 498,400.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.