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Finding the Fourth Proportional to 203,263.86, 280,498.68 and 117,220.80

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Solution

The fourth proportional to 203,263.86, 280,498.68 and 117,220.80 is: 161,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,263.86 : 280,498.68 = 117,220.80 : x
  2. Step 2: Convert to fraction form
    203,263.86/280,498.68 = 117,220.80/x
  3. Step 3: Cross multiply
    203,263.86x = 280,498.68 × 117,220.80
  4. Step 4: Simplify right side
    203,263.86x = 32,880,279,668.54
  5. Step 5: Solve for x
    x = 32,880,279,668.54/203,263.86
  6. Step 6: Final answer
    x = 161,761.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.