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Finding the Fourth Proportional to 240,626.82, 360,815.64 and 128,276.86

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Solution

The fourth proportional to 240,626.82, 360,815.64 and 128,276.86 is: 192,348.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,626.82 : 360,815.64 = 128,276.86 : x
  2. Step 2: Convert to fraction form
    240,626.82/360,815.64 = 128,276.86/x
  3. Step 3: Cross multiply
    240,626.82x = 360,815.64 × 128,276.86
  4. Step 4: Simplify right side
    240,626.82x = 46,284,298,240.13
  5. Step 5: Solve for x
    x = 46,284,298,240.13/240,626.82
  6. Step 6: Final answer
    x = 192,348.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.