Home / 258,701.38-388,302.33-186,728.49

Finding the Fourth Proportional to 258,701.38, 388,302.33 and 186,728.49

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Solution

The fourth proportional to 258,701.38, 388,302.33 and 186,728.49 is: 280,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,701.38 : 388,302.33 = 186,728.49 : x
  2. Step 2: Convert to fraction form
    258,701.38/388,302.33 = 186,728.49/x
  3. Step 3: Cross multiply
    258,701.38x = 388,302.33 × 186,728.49
  4. Step 4: Simplify right side
    258,701.38x = 72,507,107,744.38
  5. Step 5: Solve for x
    x = 72,507,107,744.38/258,701.38
  6. Step 6: Final answer
    x = 280,273.37

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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.