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Finding the Fourth Proportional to 251,189.60, 376,201.20 and 171,874.40

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Solution

The fourth proportional to 251,189.60, 376,201.20 and 171,874.40 is: 257,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,189.60 : 376,201.20 = 171,874.40 : x
  2. Step 2: Convert to fraction form
    251,189.60/376,201.20 = 171,874.40/x
  3. Step 3: Cross multiply
    251,189.60x = 376,201.20 × 171,874.40
  4. Step 4: Simplify right side
    251,189.60x = 64,659,355,529.28
  5. Step 5: Solve for x
    x = 64,659,355,529.28/251,189.60
  6. Step 6: Final answer
    x = 257,412.55

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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.