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Finding the Fourth Proportional to 239,408.49, 330,384.72 and 131,976.17

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Solution

The fourth proportional to 239,408.49, 330,384.72 and 131,976.17 is: 182,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,408.49 : 330,384.72 = 131,976.17 : x
  2. Step 2: Convert to fraction form
    239,408.49/330,384.72 = 131,976.17/x
  3. Step 3: Cross multiply
    239,408.49x = 330,384.72 × 131,976.17
  4. Step 4: Simplify right side
    239,408.49x = 43,602,909,972.12
  5. Step 5: Solve for x
    x = 43,602,909,972.12/239,408.49
  6. Step 6: Final answer
    x = 182,127.67

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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.