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Finding the Fourth Proportional to 203,348.12, 280,630.72 and 117,275.08

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Solution

The fourth proportional to 203,348.12, 280,630.72 and 117,275.08 is: 161,845.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,348.12 : 280,630.72 = 117,275.08 : x
  2. Step 2: Convert to fraction form
    203,348.12/280,630.72 = 117,275.08/x
  3. Step 3: Cross multiply
    203,348.12x = 280,630.72 × 117,275.08
  4. Step 4: Simplify right side
    203,348.12x = 32,910,990,138.46
  5. Step 5: Solve for x
    x = 32,910,990,138.46/203,348.12
  6. Step 6: Final answer
    x = 161,845.56

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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.