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Finding the Fourth Proportional to 308,643.24, 426,169.32 and 236,909.64

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Solution

The fourth proportional to 308,643.24, 426,169.32 and 236,909.64 is: 327,120.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,643.24 : 426,169.32 = 236,909.64 : x
  2. Step 2: Convert to fraction form
    308,643.24/426,169.32 = 236,909.64/x
  3. Step 3: Cross multiply
    308,643.24x = 426,169.32 × 236,909.64
  4. Step 4: Simplify right side
    308,643.24x = 100,963,620,180.25
  5. Step 5: Solve for x
    x = 100,963,620,180.25/308,643.24
  6. Step 6: Final answer
    x = 327,120.79

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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.