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Finding the Fourth Proportional to 408,027.40, 612,040.17 and 108,508.06

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Solution

The fourth proportional to 408,027.40, 612,040.17 and 108,508.06 is: 162,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,027.40 : 612,040.17 = 108,508.06 : x
  2. Step 2: Convert to fraction form
    408,027.40/612,040.17 = 108,508.06/x
  3. Step 3: Cross multiply
    408,027.40x = 612,040.17 × 108,508.06
  4. Step 4: Simplify right side
    408,027.40x = 66,411,291,488.77
  5. Step 5: Solve for x
    x = 66,411,291,488.77/408,027.40
  6. Step 6: Final answer
    x = 162,761.84

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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.