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Finding the Fourth Proportional to 239,407.49, 330,383.34 and 131,975.17

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Solution

The fourth proportional to 239,407.49, 330,383.34 and 131,975.17 is: 182,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,407.49 : 330,383.34 = 131,975.17 : x
  2. Step 2: Convert to fraction form
    239,407.49/330,383.34 = 131,975.17/x
  3. Step 3: Cross multiply
    239,407.49x = 330,383.34 × 131,975.17
  4. Step 4: Simplify right side
    239,407.49x = 43,602,396,635.71
  5. Step 5: Solve for x
    x = 43,602,396,635.71/239,407.49
  6. Step 6: Final answer
    x = 182,126.28

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1.5x scale

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.