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Finding the Fourth Proportional to 221,321.60, 331,586.40 and 134,609.60

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Solution

The fourth proportional to 221,321.60, 331,586.40 and 134,609.60 is: 201,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,321.60 : 331,586.40 = 134,609.60 : x
  2. Step 2: Convert to fraction form
    221,321.60/331,586.40 = 134,609.60/x
  3. Step 3: Cross multiply
    221,321.60x = 331,586.40 × 134,609.60
  4. Step 4: Simplify right side
    221,321.60x = 44,634,712,669.44
  5. Step 5: Solve for x
    x = 44,634,712,669.44/221,321.60
  6. Step 6: Final answer
    x = 201,673.55

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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.