Home / 259,866.77-389,814.02-82,387.67

Finding the Fourth Proportional to 259,866.77, 389,814.02 and 82,387.67

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Solution

The fourth proportional to 259,866.77, 389,814.02 and 82,387.67 is: 123,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,866.77 : 389,814.02 = 82,387.67 : x
  2. Step 2: Convert to fraction form
    259,866.77/389,814.02 = 82,387.67/x
  3. Step 3: Cross multiply
    259,866.77x = 389,814.02 × 82,387.67
  4. Step 4: Simplify right side
    259,866.77x = 32,115,866,789.08
  5. Step 5: Solve for x
    x = 32,115,866,789.08/259,866.77
  6. Step 6: Final answer
    x = 123,585.90

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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.