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Finding the Fourth Proportional to 365,645.60, 548,209.20 and 140,919.20

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Solution

The fourth proportional to 365,645.60, 548,209.20 and 140,919.20 is: 211,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,645.60 : 548,209.20 = 140,919.20 : x
  2. Step 2: Convert to fraction form
    365,645.60/548,209.20 = 140,919.20/x
  3. Step 3: Cross multiply
    365,645.60x = 548,209.20 × 140,919.20
  4. Step 4: Simplify right side
    365,645.60x = 77,253,201,896.64
  5. Step 5: Solve for x
    x = 77,253,201,896.64/365,645.60
  6. Step 6: Final answer
    x = 211,278.90

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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.