Home / 258,325.30-387,495.22-71,336.80

Finding the Fourth Proportional to 258,325.30, 387,495.22 and 71,336.80

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Solution

The fourth proportional to 258,325.30, 387,495.22 and 71,336.80 is: 107,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,325.30 : 387,495.22 = 71,336.80 : x
  2. Step 2: Convert to fraction form
    258,325.30/387,495.22 = 71,336.80/x
  3. Step 3: Cross multiply
    258,325.30x = 387,495.22 × 71,336.80
  4. Step 4: Simplify right side
    258,325.30x = 27,642,669,010.10
  5. Step 5: Solve for x
    x = 27,642,669,010.10/258,325.30
  6. Step 6: Final answer
    x = 107,007.21

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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.