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Finding the Fourth Proportional to 263,672.20, 395,333.58 and 145,400.20

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Solution

The fourth proportional to 263,672.20, 395,333.58 and 145,400.20 is: 218,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,672.20 : 395,333.58 = 145,400.20 : x
  2. Step 2: Convert to fraction form
    263,672.20/395,333.58 = 145,400.20/x
  3. Step 3: Cross multiply
    263,672.20x = 395,333.58 × 145,400.20
  4. Step 4: Simplify right side
    263,672.20x = 57,481,581,598.72
  5. Step 5: Solve for x
    x = 57,481,581,598.72/263,672.20
  6. Step 6: Final answer
    x = 218,003.95

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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.