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Finding the Fourth Proportional to 408,525.93, 612,788.97 and 109,007.64

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Solution

The fourth proportional to 408,525.93, 612,788.97 and 109,007.64 is: 163,511.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,525.93 : 612,788.97 = 109,007.64 : x
  2. Step 2: Convert to fraction form
    408,525.93/612,788.97 = 109,007.64/x
  3. Step 3: Cross multiply
    408,525.93x = 612,788.97 × 109,007.64
  4. Step 4: Simplify right side
    408,525.93x = 66,798,679,437.73
  5. Step 5: Solve for x
    x = 66,798,679,437.73/408,525.93
  6. Step 6: Final answer
    x = 163,511.48

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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.