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Finding the Fourth Proportional to 420,125.60, 629,778.34 and 167,330.27

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Solution

The fourth proportional to 420,125.60, 629,778.34 and 167,330.27 is: 250,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,125.60 : 629,778.34 = 167,330.27 : x
  2. Step 2: Convert to fraction form
    420,125.60/629,778.34 = 167,330.27/x
  3. Step 3: Cross multiply
    420,125.60x = 629,778.34 × 167,330.27
  4. Step 4: Simplify right side
    420,125.60x = 105,380,981,455.96
  5. Step 5: Solve for x
    x = 105,380,981,455.96/420,125.60
  6. Step 6: Final answer
    x = 250,832.09

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1.5x scale

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.