Home / 259,860.60-389,756.25-82,385.55

Finding the Fourth Proportional to 259,860.60, 389,756.25 and 82,385.55

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Solution

The fourth proportional to 259,860.60, 389,756.25 and 82,385.55 is: 123,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,860.60 : 389,756.25 = 82,385.55 : x
  2. Step 2: Convert to fraction form
    259,860.60/389,756.25 = 82,385.55/x
  3. Step 3: Cross multiply
    259,860.60x = 389,756.25 × 82,385.55
  4. Step 4: Simplify right side
    259,860.60x = 32,110,283,022.19
  5. Step 5: Solve for x
    x = 32,110,283,022.19/259,860.60
  6. Step 6: Final answer
    x = 123,567.34

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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.