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Finding the Fourth Proportional to 263,617.20, 395,425.80 and 121,462.20

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Solution

The fourth proportional to 263,617.20, 395,425.80 and 121,462.20 is: 182,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,617.20 : 395,425.80 = 121,462.20 : x
  2. Step 2: Convert to fraction form
    263,617.20/395,425.80 = 121,462.20/x
  3. Step 3: Cross multiply
    263,617.20x = 395,425.80 × 121,462.20
  4. Step 4: Simplify right side
    263,617.20x = 48,029,287,604.76
  5. Step 5: Solve for x
    x = 48,029,287,604.76/263,617.20
  6. Step 6: Final answer
    x = 182,193.30

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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.