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Finding the Fourth Proportional to 203,486.02, 280,825.08 and 112,850.65

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Solution

The fourth proportional to 203,486.02, 280,825.08 and 112,850.65 is: 155,741.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,486.02 : 280,825.08 = 112,850.65 : x
  2. Step 2: Convert to fraction form
    203,486.02/280,825.08 = 112,850.65/x
  3. Step 3: Cross multiply
    203,486.02x = 280,825.08 × 112,850.65
  4. Step 4: Simplify right side
    203,486.02x = 31,691,292,814.30
  5. Step 5: Solve for x
    x = 31,691,292,814.30/203,486.02
  6. Step 6: Final answer
    x = 155,741.87

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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.