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Finding the Fourth Proportional to 305,542.71, 421,642.60 and 169,568.75

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Solution

The fourth proportional to 305,542.71, 421,642.60 and 169,568.75 is: 234,001.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,542.71 : 421,642.60 = 169,568.75 : x
  2. Step 2: Convert to fraction form
    305,542.71/421,642.60 = 169,568.75/x
  3. Step 3: Cross multiply
    305,542.71x = 421,642.60 × 169,568.75
  4. Step 4: Simplify right side
    305,542.71x = 71,497,409,258.93
  5. Step 5: Solve for x
    x = 71,497,409,258.93/305,542.71
  6. Step 6: Final answer
    x = 234,001.36

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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.