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Finding the Fourth Proportional to 392,646.62, 589,025.62 and 126,345.26

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Solution

The fourth proportional to 392,646.62, 589,025.62 and 126,345.26 is: 189,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,646.62 : 589,025.62 = 126,345.26 : x
  2. Step 2: Convert to fraction form
    392,646.62/589,025.62 = 126,345.26/x
  3. Step 3: Cross multiply
    392,646.62x = 589,025.62 × 126,345.26
  4. Step 4: Simplify right side
    392,646.62x = 74,420,595,105.56
  5. Step 5: Solve for x
    x = 74,420,595,105.56/392,646.62
  6. Step 6: Final answer
    x = 189,535.81

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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.