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Finding the Fourth Proportional to 290,548.52, 400,954.54 and 163,221.38

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Solution

The fourth proportional to 290,548.52, 400,954.54 and 163,221.38 is: 225,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,548.52 : 400,954.54 = 163,221.38 : x
  2. Step 2: Convert to fraction form
    290,548.52/400,954.54 = 163,221.38/x
  3. Step 3: Cross multiply
    290,548.52x = 400,954.54 × 163,221.38
  4. Step 4: Simplify right side
    290,548.52x = 65,444,353,336.07
  5. Step 5: Solve for x
    x = 65,444,353,336.07/290,548.52
  6. Step 6: Final answer
    x = 225,244.15

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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.