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Finding the Fourth Proportional to 474,100.32, 654,265.44 and 321,185.28

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Solution

The fourth proportional to 474,100.32, 654,265.44 and 321,185.28 is: 443,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,100.32 : 654,265.44 = 321,185.28 : x
  2. Step 2: Convert to fraction form
    474,100.32/654,265.44 = 321,185.28/x
  3. Step 3: Cross multiply
    474,100.32x = 654,265.44 × 321,185.28
  4. Step 4: Simplify right side
    474,100.32x = 210,140,428,540.72
  5. Step 5: Solve for x
    x = 210,140,428,540.72/474,100.32
  6. Step 6: Final answer
    x = 443,240.43

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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.