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Finding the Fourth Proportional to 309,122.68, 426,594.72 and 173,155.56

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Solution

The fourth proportional to 309,122.68, 426,594.72 and 173,155.56 is: 238,957.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,122.68 : 426,594.72 = 173,155.56 : x
  2. Step 2: Convert to fraction form
    309,122.68/426,594.72 = 173,155.56/x
  3. Step 3: Cross multiply
    309,122.68x = 426,594.72 × 173,155.56
  4. Step 4: Simplify right side
    309,122.68x = 73,867,247,634.64
  5. Step 5: Solve for x
    x = 73,867,247,634.64/309,122.68
  6. Step 6: Final answer
    x = 238,957.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.