Home / 259,834.86-389,748.20-215,367.68

Finding the Fourth Proportional to 259,834.86, 389,748.20 and 215,367.68

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Solution

The fourth proportional to 259,834.86, 389,748.20 and 215,367.68 is: 323,048.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,834.86 : 389,748.20 = 215,367.68 : x
  2. Step 2: Convert to fraction form
    259,834.86/389,748.20 = 215,367.68/x
  3. Step 3: Cross multiply
    259,834.86x = 389,748.20 × 215,367.68
  4. Step 4: Simplify right side
    259,834.86x = 83,939,165,515.71
  5. Step 5: Solve for x
    x = 83,939,165,515.71/259,834.86
  6. Step 6: Final answer
    x = 323,048.13

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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.