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Finding the Fourth Proportional to 203,358.80, 280,634.93 and 112,714.94

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Solution

The fourth proportional to 203,358.80, 280,634.93 and 112,714.94 is: 155,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,358.80 : 280,634.93 = 112,714.94 : x
  2. Step 2: Convert to fraction form
    203,358.80/280,634.93 = 112,714.94/x
  3. Step 3: Cross multiply
    203,358.80x = 280,634.93 × 112,714.94
  4. Step 4: Simplify right side
    203,358.80x = 31,631,749,857.55
  5. Step 5: Solve for x
    x = 31,631,749,857.55/203,358.80
  6. Step 6: Final answer
    x = 155,546.50

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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.