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Finding the Fourth Proportional to 243,824.88, 336,491.40 and 136,388.51

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Solution

The fourth proportional to 243,824.88, 336,491.40 and 136,388.51 is: 188,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,824.88 : 336,491.40 = 136,388.51 : x
  2. Step 2: Convert to fraction form
    243,824.88/336,491.40 = 136,388.51/x
  3. Step 3: Cross multiply
    243,824.88x = 336,491.40 × 136,388.51
  4. Step 4: Simplify right side
    243,824.88x = 45,893,558,991.36
  5. Step 5: Solve for x
    x = 45,893,558,991.36/243,824.88
  6. Step 6: Final answer
    x = 188,223.45

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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.