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Finding the Fourth Proportional to 306,419.54, 422,862.20 and 168,600.26

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Solution

The fourth proportional to 306,419.54, 422,862.20 and 168,600.26 is: 232,670.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,419.54 : 422,862.20 = 168,600.26 : x
  2. Step 2: Convert to fraction form
    306,419.54/422,862.20 = 168,600.26/x
  3. Step 3: Cross multiply
    306,419.54x = 422,862.20 × 168,600.26
  4. Step 4: Simplify right side
    306,419.54x = 71,294,673,906.86
  5. Step 5: Solve for x
    x = 71,294,673,906.86/306,419.54
  6. Step 6: Final answer
    x = 232,670.13

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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.