Home / 258,237.86-387,379.08-71,249.36

Finding the Fourth Proportional to 258,237.86, 387,379.08 and 71,249.36

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Solution

The fourth proportional to 258,237.86, 387,379.08 and 71,249.36 is: 106,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,237.86 : 387,379.08 = 71,249.36 : x
  2. Step 2: Convert to fraction form
    258,237.86/387,379.08 = 71,249.36/x
  3. Step 3: Cross multiply
    258,237.86x = 387,379.08 × 71,249.36
  4. Step 4: Simplify right side
    258,237.86x = 27,600,509,590.49
  5. Step 5: Solve for x
    x = 27,600,509,590.49/258,237.86
  6. Step 6: Final answer
    x = 106,880.18

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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.