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Finding the Fourth Proportional to 203,367.65, 280,646.87 and 111,486.77

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Solution

The fourth proportional to 203,367.65, 280,646.87 and 111,486.77 is: 153,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,367.65 : 280,646.87 = 111,486.77 : x
  2. Step 2: Convert to fraction form
    203,367.65/280,646.87 = 111,486.77/x
  3. Step 3: Cross multiply
    203,367.65x = 280,646.87 × 111,486.77
  4. Step 4: Simplify right side
    203,367.65x = 31,288,414,027.24
  5. Step 5: Solve for x
    x = 31,288,414,027.24/203,367.65
  6. Step 6: Final answer
    x = 153,851.48

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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.