Home / 259,619.60-389,403.48-72,632.72

Finding the Fourth Proportional to 259,619.60, 389,403.48 and 72,632.72

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Solution

The fourth proportional to 259,619.60, 389,403.48 and 72,632.72 is: 108,941.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,619.60 : 389,403.48 = 72,632.72 : x
  2. Step 2: Convert to fraction form
    259,619.60/389,403.48 = 72,632.72/x
  3. Step 3: Cross multiply
    259,619.60x = 389,403.48 × 72,632.72
  4. Step 4: Simplify right side
    259,619.60x = 28,283,433,929.87
  5. Step 5: Solve for x
    x = 28,283,433,929.87/259,619.60
  6. Step 6: Final answer
    x = 108,941.83

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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.