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Finding the Fourth Proportional to 408,036.82, 612,006.54 and 108,539.32

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Solution

The fourth proportional to 408,036.82, 612,006.54 and 108,539.32 is: 162,796.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,036.82 : 612,006.54 = 108,539.32 : x
  2. Step 2: Convert to fraction form
    408,036.82/612,006.54 = 108,539.32/x
  3. Step 3: Cross multiply
    408,036.82x = 612,006.54 × 108,539.32
  4. Step 4: Simplify right side
    408,036.82x = 66,426,773,687.15
  5. Step 5: Solve for x
    x = 66,426,773,687.15/408,036.82
  6. Step 6: Final answer
    x = 162,796.03

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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.