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Finding the Fourth Proportional to 259,376.41, 389,031.81 and 69,851.92

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Solution

The fourth proportional to 259,376.41, 389,031.81 and 69,851.92 is: 104,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,376.41 : 389,031.81 = 69,851.92 : x
  2. Step 2: Convert to fraction form
    259,376.41/389,031.81 = 69,851.92/x
  3. Step 3: Cross multiply
    259,376.41x = 389,031.81 × 69,851.92
  4. Step 4: Simplify right side
    259,376.41x = 27,174,618,869.58
  5. Step 5: Solve for x
    x = 27,174,618,869.58/259,376.41
  6. Step 6: Final answer
    x = 104,769.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.