Home / 327,929.20-492,174.18-128,389.71

Finding the Fourth Proportional to 327,929.20, 492,174.18 and 128,389.71

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Solution

The fourth proportional to 327,929.20, 492,174.18 and 128,389.71 is: 192,694.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,929.20 : 492,174.18 = 128,389.71 : x
  2. Step 2: Convert to fraction form
    327,929.20/492,174.18 = 128,389.71/x
  3. Step 3: Cross multiply
    327,929.20x = 492,174.18 × 128,389.71
  4. Step 4: Simplify right side
    327,929.20x = 63,190,102,566.80
  5. Step 5: Solve for x
    x = 63,190,102,566.80/327,929.20
  6. Step 6: Final answer
    x = 192,694.34

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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.