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Finding the Fourth Proportional to 263,478.80, 395,218.20 and 248,272.40

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Solution

The fourth proportional to 263,478.80, 395,218.20 and 248,272.40 is: 372,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,478.80 : 395,218.20 = 248,272.40 : x
  2. Step 2: Convert to fraction form
    263,478.80/395,218.20 = 248,272.40/x
  3. Step 3: Cross multiply
    263,478.80x = 395,218.20 × 248,272.40
  4. Step 4: Simplify right side
    263,478.80x = 98,121,771,037.68
  5. Step 5: Solve for x
    x = 98,121,771,037.68/263,478.80
  6. Step 6: Final answer
    x = 372,408.60

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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.