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Finding the Fourth Proportional to 239,953.62, 331,116.66 and 137,973.90

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Solution

The fourth proportional to 239,953.62, 331,116.66 and 137,973.90 is: 190,392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,953.62 : 331,116.66 = 137,973.90 : x
  2. Step 2: Convert to fraction form
    239,953.62/331,116.66 = 137,973.90/x
  3. Step 3: Cross multiply
    239,953.62x = 331,116.66 × 137,973.90
  4. Step 4: Simplify right side
    239,953.62x = 45,685,456,935.17
  5. Step 5: Solve for x
    x = 45,685,456,935.17/239,953.62
  6. Step 6: Final answer
    x = 190,392.86

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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.