Home / 420,162.08-629,920.04-217,540.96

Finding the Fourth Proportional to 420,162.08, 629,920.04 and 217,540.96

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Solution

The fourth proportional to 420,162.08, 629,920.04 and 217,540.96 is: 326,144.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,162.08 : 629,920.04 = 217,540.96 : x
  2. Step 2: Convert to fraction form
    420,162.08/629,920.04 = 217,540.96/x
  3. Step 3: Cross multiply
    420,162.08x = 629,920.04 × 217,540.96
  4. Step 4: Simplify right side
    420,162.08x = 137,033,410,224.84
  5. Step 5: Solve for x
    x = 137,033,410,224.84/420,162.08
  6. Step 6: Final answer
    x = 326,144.16

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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.