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Finding the Fourth Proportional to 203,353.56, 280,647.72 and 112,739.04

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Solution

The fourth proportional to 203,353.56, 280,647.72 and 112,739.04 is: 155,590.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,353.56 : 280,647.72 = 112,739.04 : x
  2. Step 2: Convert to fraction form
    203,353.56/280,647.72 = 112,739.04/x
  3. Step 3: Cross multiply
    203,353.56x = 280,647.72 × 112,739.04
  4. Step 4: Simplify right side
    203,353.56x = 31,639,954,530.99
  5. Step 5: Solve for x
    x = 31,639,954,530.99/203,353.56
  6. Step 6: Final answer
    x = 155,590.86

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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.