Home / 263,780.40-395,670.60-76,810.80

Finding the Fourth Proportional to 263,780.40, 395,670.60 and 76,810.80

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Solution

The fourth proportional to 263,780.40, 395,670.60 and 76,810.80 is: 115,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,780.40 : 395,670.60 = 76,810.80 : x
  2. Step 2: Convert to fraction form
    263,780.40/395,670.60 = 76,810.80/x
  3. Step 3: Cross multiply
    263,780.40x = 395,670.60 × 76,810.80
  4. Step 4: Simplify right side
    263,780.40x = 30,391,775,322.48
  5. Step 5: Solve for x
    x = 30,391,775,322.48/263,780.40
  6. Step 6: Final answer
    x = 115,216.20

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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.