Home / 221,243.20-331,605.60-165,774.40

Finding the Fourth Proportional to 221,243.20, 331,605.60 and 165,774.40

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Solution

The fourth proportional to 221,243.20, 331,605.60 and 165,774.40 is: 248,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,243.20 : 331,605.60 = 165,774.40 : x
  2. Step 2: Convert to fraction form
    221,243.20/331,605.60 = 165,774.40/x
  3. Step 3: Cross multiply
    221,243.20x = 331,605.60 × 165,774.40
  4. Step 4: Simplify right side
    221,243.20x = 54,971,719,376.64
  5. Step 5: Solve for x
    x = 54,971,719,376.64/221,243.20
  6. Step 6: Final answer
    x = 248,467.39

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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.