Home / 258,835.85-387,736.88-205,617.94

Finding the Fourth Proportional to 258,835.85, 387,736.88 and 205,617.94

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Solution

The fourth proportional to 258,835.85, 387,736.88 and 205,617.94 is: 308,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,835.85 : 387,736.88 = 205,617.94 : x
  2. Step 2: Convert to fraction form
    258,835.85/387,736.88 = 205,617.94/x
  3. Step 3: Cross multiply
    258,835.85x = 387,736.88 × 205,617.94
  4. Step 4: Simplify right side
    258,835.85x = 79,725,658,711.22
  5. Step 5: Solve for x
    x = 79,725,658,711.22/258,835.85
  6. Step 6: Final answer
    x = 308,016.29

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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.