Home / 258,334.21-387,523.56-71,345.71

Finding the Fourth Proportional to 258,334.21, 387,523.56 and 71,345.71

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Solution

The fourth proportional to 258,334.21, 387,523.56 and 71,345.71 is: 107,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,334.21 : 387,523.56 = 71,345.71 : x
  2. Step 2: Convert to fraction form
    258,334.21/387,523.56 = 71,345.71/x
  3. Step 3: Cross multiply
    258,334.21x = 387,523.56 × 71,345.71
  4. Step 4: Simplify right side
    258,334.21x = 27,648,143,529.93
  5. Step 5: Solve for x
    x = 27,648,143,529.93/258,334.21
  6. Step 6: Final answer
    x = 107,024.71

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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.