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Finding the Fourth Proportional to 445,338.08, 668,001.43 and 108,379.31

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Solution

The fourth proportional to 445,338.08, 668,001.43 and 108,379.31 is: 162,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,338.08 : 668,001.43 = 108,379.31 : x
  2. Step 2: Convert to fraction form
    445,338.08/668,001.43 = 108,379.31/x
  3. Step 3: Cross multiply
    445,338.08x = 668,001.43 × 108,379.31
  4. Step 4: Simplify right side
    445,338.08x = 72,397,534,062.41
  5. Step 5: Solve for x
    x = 72,397,534,062.41/445,338.08
  6. Step 6: Final answer
    x = 162,567.58

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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.