Home / 258,229.03-387,365.85-71,240.53

Finding the Fourth Proportional to 258,229.03, 387,365.85 and 71,240.53

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Solution

The fourth proportional to 258,229.03, 387,365.85 and 71,240.53 is: 106,866.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,229.03 : 387,365.85 = 71,240.53 : x
  2. Step 2: Convert to fraction form
    258,229.03/387,365.85 = 71,240.53/x
  3. Step 3: Cross multiply
    258,229.03x = 387,365.85 × 71,240.53
  4. Step 4: Simplify right side
    258,229.03x = 27,596,146,521.07
  5. Step 5: Solve for x
    x = 27,596,146,521.07/258,229.03
  6. Step 6: Final answer
    x = 106,866.94

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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.