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Finding the Fourth Proportional to 423,705.85, 635,558.55 and 108,162.64

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Solution

The fourth proportional to 423,705.85, 635,558.55 and 108,162.64 is: 162,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,705.85 : 635,558.55 = 108,162.64 : x
  2. Step 2: Convert to fraction form
    423,705.85/635,558.55 = 108,162.64/x
  3. Step 3: Cross multiply
    423,705.85x = 635,558.55 × 108,162.64
  4. Step 4: Simplify right side
    423,705.85x = 68,743,690,642.57
  5. Step 5: Solve for x
    x = 68,743,690,642.57/423,705.85
  6. Step 6: Final answer
    x = 162,243.90

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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.