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Finding the Fourth Proportional to 239,564.96, 330,587.40 and 137,519.54

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Solution

The fourth proportional to 239,564.96, 330,587.40 and 137,519.54 is: 189,769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,564.96 : 330,587.40 = 137,519.54 : x
  2. Step 2: Convert to fraction form
    239,564.96/330,587.40 = 137,519.54/x
  3. Step 3: Cross multiply
    239,564.96x = 330,587.40 × 137,519.54
  4. Step 4: Simplify right side
    239,564.96x = 45,462,227,177.80
  5. Step 5: Solve for x
    x = 45,462,227,177.80/239,564.96
  6. Step 6: Final answer
    x = 189,769.94

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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.