Home / 263,620.20-395,138.70-145,376.40

Finding the Fourth Proportional to 263,620.20, 395,138.70 and 145,376.40

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Solution

The fourth proportional to 263,620.20, 395,138.70 and 145,376.40 is: 217,903.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,620.20 : 395,138.70 = 145,376.40 : x
  2. Step 2: Convert to fraction form
    263,620.20/395,138.70 = 145,376.40/x
  3. Step 3: Cross multiply
    263,620.20x = 395,138.70 × 145,376.40
  4. Step 4: Simplify right side
    263,620.20x = 57,443,841,706.68
  5. Step 5: Solve for x
    x = 57,443,841,706.68/263,620.20
  6. Step 6: Final answer
    x = 217,903.79

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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.