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Finding the Fourth Proportional to 290,327.43, 435,321.64 and 112,626.79

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Solution

The fourth proportional to 290,327.43, 435,321.64 and 112,626.79 is: 168,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,327.43 : 435,321.64 = 112,626.79 : x
  2. Step 2: Convert to fraction form
    290,327.43/435,321.64 = 112,626.79/x
  3. Step 3: Cross multiply
    290,327.43x = 435,321.64 × 112,626.79
  4. Step 4: Simplify right side
    290,327.43x = 49,028,878,930.74
  5. Step 5: Solve for x
    x = 49,028,878,930.74/290,327.43
  6. Step 6: Final answer
    x = 168,874.43

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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.