Home / 258,238.86-387,380.58-71,250.36

Finding the Fourth Proportional to 258,238.86, 387,380.58 and 71,250.36

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Solution

The fourth proportional to 258,238.86, 387,380.58 and 71,250.36 is: 106,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,238.86 : 387,380.58 = 71,250.36 : x
  2. Step 2: Convert to fraction form
    258,238.86/387,380.58 = 71,250.36/x
  3. Step 3: Cross multiply
    258,238.86x = 387,380.58 × 71,250.36
  4. Step 4: Simplify right side
    258,238.86x = 27,601,005,782.01
  5. Step 5: Solve for x
    x = 27,601,005,782.01/258,238.86
  6. Step 6: Final answer
    x = 106,881.69

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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.