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Finding the Fourth Proportional to 326,940.99, 490,601.02 and 137,386.41

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Solution

The fourth proportional to 326,940.99, 490,601.02 and 137,386.41 is: 206,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,940.99 : 490,601.02 = 137,386.41 : x
  2. Step 2: Convert to fraction form
    326,940.99/490,601.02 = 137,386.41/x
  3. Step 3: Cross multiply
    326,940.99x = 490,601.02 × 137,386.41
  4. Step 4: Simplify right side
    326,940.99x = 67,401,912,880.14
  5. Step 5: Solve for x
    x = 67,401,912,880.14/326,940.99
  6. Step 6: Final answer
    x = 206,159.26

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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.