Home / 389,739.89-585,147.68-269,501.87

Finding the Fourth Proportional to 389,739.89, 585,147.68 and 269,501.87

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Solution

The fourth proportional to 389,739.89, 585,147.68 and 269,501.87 is: 404,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,739.89 : 585,147.68 = 269,501.87 : x
  2. Step 2: Convert to fraction form
    389,739.89/585,147.68 = 269,501.87/x
  3. Step 3: Cross multiply
    389,739.89x = 585,147.68 × 269,501.87
  4. Step 4: Simplify right side
    389,739.89x = 157,698,389,712.91
  5. Step 5: Solve for x
    x = 157,698,389,712.91/389,739.89
  6. Step 6: Final answer
    x = 404,624.71

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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.