Home / 258,291.99-387,454.39-68,749.26

Finding the Fourth Proportional to 258,291.99, 387,454.39 and 68,749.26

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Solution

The fourth proportional to 258,291.99, 387,454.39 and 68,749.26 is: 103,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,291.99 : 387,454.39 = 68,749.26 : x
  2. Step 2: Convert to fraction form
    258,291.99/387,454.39 = 68,749.26/x
  3. Step 3: Cross multiply
    258,291.99x = 387,454.39 × 68,749.26
  4. Step 4: Simplify right side
    258,291.99x = 26,637,200,971.42
  5. Step 5: Solve for x
    x = 26,637,200,971.42/258,291.99
  6. Step 6: Final answer
    x = 103,128.25

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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.