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Finding the Fourth Proportional to 243,976.71, 336,687.78 and 136,546.74

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Solution

The fourth proportional to 243,976.71, 336,687.78 and 136,546.74 is: 188,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,976.71 : 336,687.78 = 136,546.74 : x
  2. Step 2: Convert to fraction form
    243,976.71/336,687.78 = 136,546.74/x
  3. Step 3: Cross multiply
    243,976.71x = 336,687.78 × 136,546.74
  4. Step 4: Simplify right side
    243,976.71x = 45,973,618,756.84
  5. Step 5: Solve for x
    x = 45,973,618,756.84/243,976.71
  6. Step 6: Final answer
    x = 188,434.46

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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.