Home / 221,209.20-331,554.60-165,740.40

Finding the Fourth Proportional to 221,209.20, 331,554.60 and 165,740.40

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Solution

The fourth proportional to 221,209.20, 331,554.60 and 165,740.40 is: 248,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.20 : 331,554.60 = 165,740.40 : x
  2. Step 2: Convert to fraction form
    221,209.20/331,554.60 = 165,740.40/x
  3. Step 3: Cross multiply
    221,209.20x = 331,554.60 × 165,740.40
  4. Step 4: Simplify right side
    221,209.20x = 54,951,992,025.84
  5. Step 5: Solve for x
    x = 54,951,992,025.84/221,209.20
  6. Step 6: Final answer
    x = 248,416.40

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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.