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Finding the Fourth Proportional to 239,656, 330,725.28 and 133,672

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Solution

The fourth proportional to 239,656, 330,725.28 and 133,672 is: 184,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,656 : 330,725.28 = 133,672 : x
  2. Step 2: Convert to fraction form
    239,656/330,725.28 = 133,672/x
  3. Step 3: Cross multiply
    239,656x = 330,725.28 × 133,672
  4. Step 4: Simplify right side
    239,656x = 44,208,709,628.16
  5. Step 5: Solve for x
    x = 44,208,709,628.16/239,656
  6. Step 6: Final answer
    x = 184,467.36

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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.