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Finding the Fourth Proportional to 203,503.03, 280,814.17 and 112,857.41

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Solution

The fourth proportional to 203,503.03, 280,814.17 and 112,857.41 is: 155,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,503.03 : 280,814.17 = 112,857.41 : x
  2. Step 2: Convert to fraction form
    203,503.03/280,814.17 = 112,857.41/x
  3. Step 3: Cross multiply
    203,503.03x = 280,814.17 × 112,857.41
  4. Step 4: Simplify right side
    203,503.03x = 31,691,959,353.21
  5. Step 5: Solve for x
    x = 31,691,959,353.21/203,503.03
  6. Step 6: Final answer
    x = 155,732.13

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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.