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Finding the Fourth Proportional to 203,240.87, 280,511.66 and 117,255.40

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Solution

The fourth proportional to 203,240.87, 280,511.66 and 117,255.40 is: 161,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,240.87 : 280,511.66 = 117,255.40 : x
  2. Step 2: Convert to fraction form
    203,240.87/280,511.66 = 117,255.40/x
  3. Step 3: Cross multiply
    203,240.87x = 280,511.66 × 117,255.40
  4. Step 4: Simplify right side
    203,240.87x = 32,891,505,830.26
  5. Step 5: Solve for x
    x = 32,891,505,830.26/203,240.87
  6. Step 6: Final answer
    x = 161,835.10

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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.