Home / 258,198.30-387,297.72-80,706.24

Finding the Fourth Proportional to 258,198.30, 387,297.72 and 80,706.24

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Solution

The fourth proportional to 258,198.30, 387,297.72 and 80,706.24 is: 121,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,198.30 : 387,297.72 = 80,706.24 : x
  2. Step 2: Convert to fraction form
    258,198.30/387,297.72 = 80,706.24/x
  3. Step 3: Cross multiply
    258,198.30x = 387,297.72 × 80,706.24
  4. Step 4: Simplify right side
    258,198.30x = 31,257,342,741.77
  5. Step 5: Solve for x
    x = 31,257,342,741.77/258,198.30
  6. Step 6: Final answer
    x = 121,059.44

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1.5x scale

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.