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Finding the Fourth Proportional to 243,987.64, 336,626.22 and 136,540.60

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Solution

The fourth proportional to 243,987.64, 336,626.22 and 136,540.60 is: 188,383.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,987.64 : 336,626.22 = 136,540.60 : x
  2. Step 2: Convert to fraction form
    243,987.64/336,626.22 = 136,540.60/x
  3. Step 3: Cross multiply
    243,987.64x = 336,626.22 × 136,540.60
  4. Step 4: Simplify right side
    243,987.64x = 45,963,146,054.53
  5. Step 5: Solve for x
    x = 45,963,146,054.53/243,987.64
  6. Step 6: Final answer
    x = 188,383.09

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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.