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Finding the Fourth Proportional to 213,843.44, 320,126.06 and 129,347.90

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Solution

The fourth proportional to 213,843.44, 320,126.06 and 129,347.90 is: 193,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,843.44 : 320,126.06 = 129,347.90 : x
  2. Step 2: Convert to fraction form
    213,843.44/320,126.06 = 129,347.90/x
  3. Step 3: Cross multiply
    213,843.44x = 320,126.06 × 129,347.90
  4. Step 4: Simplify right side
    213,843.44x = 41,407,632,319.01
  5. Step 5: Solve for x
    x = 41,407,632,319.01/213,843.44
  6. Step 6: Final answer
    x = 193,635.27

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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.