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Finding the Fourth Proportional to 290,078.48, 400,333.64 and 169,258.69

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Solution

The fourth proportional to 290,078.48, 400,333.64 and 169,258.69 is: 233,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,078.48 : 400,333.64 = 169,258.69 : x
  2. Step 2: Convert to fraction form
    290,078.48/400,333.64 = 169,258.69/x
  3. Step 3: Cross multiply
    290,078.48x = 400,333.64 × 169,258.69
  4. Step 4: Simplify right side
    290,078.48x = 67,759,947,469.33
  5. Step 5: Solve for x
    x = 67,759,947,469.33/290,078.48
  6. Step 6: Final answer
    x = 233,591.78

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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.