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Finding the Fourth Proportional to 667,081.67, 920,565.92 and 361,149.93

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Solution

The fourth proportional to 667,081.67, 920,565.92 and 361,149.93 is: 498,383.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,081.67 : 920,565.92 = 361,149.93 : x
  2. Step 2: Convert to fraction form
    667,081.67/920,565.92 = 361,149.93/x
  3. Step 3: Cross multiply
    667,081.67x = 920,565.92 × 361,149.93
  4. Step 4: Simplify right side
    667,081.67x = 332,462,315,762.64
  5. Step 5: Solve for x
    x = 332,462,315,762.64/667,081.67
  6. Step 6: Final answer
    x = 498,383.23

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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.