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Finding the Fourth Proportional to 326,754.87, 490,162.56 and 127,090.41

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Solution

The fourth proportional to 326,754.87, 490,162.56 and 127,090.41 is: 190,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,754.87 : 490,162.56 = 127,090.41 : x
  2. Step 2: Convert to fraction form
    326,754.87/490,162.56 = 127,090.41/x
  3. Step 3: Cross multiply
    326,754.87x = 490,162.56 × 127,090.41
  4. Step 4: Simplify right side
    326,754.87x = 62,294,960,717.05
  5. Step 5: Solve for x
    x = 62,294,960,717.05/326,754.87
  6. Step 6: Final answer
    x = 190,647.38

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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.