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Finding the Fourth Proportional to 270,607.62, 405,863.91 and 83,620.74

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Solution

The fourth proportional to 270,607.62, 405,863.91 and 83,620.74 is: 125,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,607.62 : 405,863.91 = 83,620.74 : x
  2. Step 2: Convert to fraction form
    270,607.62/405,863.91 = 83,620.74/x
  3. Step 3: Cross multiply
    270,607.62x = 405,863.91 × 83,620.74
  4. Step 4: Simplify right side
    270,607.62x = 33,938,640,493.49
  5. Step 5: Solve for x
    x = 33,938,640,493.49/270,607.62
  6. Step 6: Final answer
    x = 125,416.43

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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.