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Finding the Fourth Proportional to 248,612.80, 372,879.60 and 82,400.80

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Solution

The fourth proportional to 248,612.80, 372,879.60 and 82,400.80 is: 123,588.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,612.80 : 372,879.60 = 82,400.80 : x
  2. Step 2: Convert to fraction form
    248,612.80/372,879.60 = 82,400.80/x
  3. Step 3: Cross multiply
    248,612.80x = 372,879.60 × 82,400.80
  4. Step 4: Simplify right side
    248,612.80x = 30,725,577,343.68
  5. Step 5: Solve for x
    x = 30,725,577,343.68/248,612.80
  6. Step 6: Final answer
    x = 123,588.07

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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.