Home / 259,860.60-389,804.87-82,381.45

Finding the Fourth Proportional to 259,860.60, 389,804.87 and 82,381.45

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Solution

The fourth proportional to 259,860.60, 389,804.87 and 82,381.45 is: 123,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,860.60 : 389,804.87 = 82,381.45 : x
  2. Step 2: Convert to fraction form
    259,860.60/389,804.87 = 82,381.45/x
  3. Step 3: Cross multiply
    259,860.60x = 389,804.87 × 82,381.45
  4. Step 4: Simplify right side
    259,860.60x = 32,112,688,926.11
  5. Step 5: Solve for x
    x = 32,112,688,926.11/259,860.60
  6. Step 6: Final answer
    x = 123,576.60

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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.