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Finding the Fourth Proportional to 240,365.76, 360,396 and 127,976.64

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Solution

The fourth proportional to 240,365.76, 360,396 and 127,976.64 is: 191,883.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,365.76 : 360,396 = 127,976.64 : x
  2. Step 2: Convert to fraction form
    240,365.76/360,396 = 127,976.64/x
  3. Step 3: Cross multiply
    240,365.76x = 360,396 × 127,976.64
  4. Step 4: Simplify right side
    240,365.76x = 46,122,269,149.44
  5. Step 5: Solve for x
    x = 46,122,269,149.44/240,365.76
  6. Step 6: Final answer
    x = 191,883.69

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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.