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Finding the Fourth Proportional to 667,496.91, 921,150.16 and 361,573.29

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Solution

The fourth proportional to 667,496.91, 921,150.16 and 361,573.29 is: 498,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,496.91 : 921,150.16 = 361,573.29 : x
  2. Step 2: Convert to fraction form
    667,496.91/921,150.16 = 361,573.29/x
  3. Step 3: Cross multiply
    667,496.91x = 921,150.16 × 361,573.29
  4. Step 4: Simplify right side
    667,496.91x = 333,063,295,622.03
  5. Step 5: Solve for x
    x = 333,063,295,622.03/667,496.91
  6. Step 6: Final answer
    x = 498,973.54

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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.