Home / 389,544.45-585,344.14-209,762.79

Finding the Fourth Proportional to 389,544.45, 585,344.14 and 209,762.79

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Solution

The fourth proportional to 389,544.45, 585,344.14 and 209,762.79 is: 315,197.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,544.45 : 585,344.14 = 209,762.79 : x
  2. Step 2: Convert to fraction form
    389,544.45/585,344.14 = 209,762.79/x
  3. Step 3: Cross multiply
    389,544.45x = 585,344.14 × 209,762.79
  4. Step 4: Simplify right side
    389,544.45x = 122,783,419,392.14
  5. Step 5: Solve for x
    x = 122,783,419,392.14/389,544.45
  6. Step 6: Final answer
    x = 315,197.46

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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.