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Finding the Fourth Proportional to 288,658.26, 398,356.71 and 161,334.18

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Solution

The fourth proportional to 288,658.26, 398,356.71 and 161,334.18 is: 222,645.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,658.26 : 398,356.71 = 161,334.18 : x
  2. Step 2: Convert to fraction form
    288,658.26/398,356.71 = 161,334.18/x
  3. Step 3: Cross multiply
    288,658.26x = 398,356.71 × 161,334.18
  4. Step 4: Simplify right side
    288,658.26x = 64,268,553,155.35
  5. Step 5: Solve for x
    x = 64,268,553,155.35/288,658.26
  6. Step 6: Final answer
    x = 222,645.81

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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.