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Finding the Fourth Proportional to 290,809.44, 401,353.20 and 163,485.18

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Solution

The fourth proportional to 290,809.44, 401,353.20 and 163,485.18 is: 225,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,809.44 : 401,353.20 = 163,485.18 : x
  2. Step 2: Convert to fraction form
    290,809.44/401,353.20 = 163,485.18/x
  3. Step 3: Cross multiply
    290,809.44x = 401,353.20 × 163,485.18
  4. Step 4: Simplify right side
    290,809.44x = 65,615,300,145.58
  5. Step 5: Solve for x
    x = 65,615,300,145.58/290,809.44
  6. Step 6: Final answer
    x = 225,629.88

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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.