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Finding the Fourth Proportional to 326,760.48, 490,332.56 and 137,206.27

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Solution

The fourth proportional to 326,760.48, 490,332.56 and 137,206.27 is: 205,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,760.48 : 490,332.56 = 137,206.27 : x
  2. Step 2: Convert to fraction form
    326,760.48/490,332.56 = 137,206.27/x
  3. Step 3: Cross multiply
    326,760.48x = 490,332.56 × 137,206.27
  4. Step 4: Simplify right side
    326,760.48x = 67,276,701,544.04
  5. Step 5: Solve for x
    x = 67,276,701,544.04/326,760.48
  6. Step 6: Final answer
    x = 205,889.96

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1.5x scale

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.