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Finding the Fourth Proportional to 215,606.44, 323,444.22 and 90,965.80

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Solution

The fourth proportional to 215,606.44, 323,444.22 and 90,965.80 is: 136,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,606.44 : 323,444.22 = 90,965.80 : x
  2. Step 2: Convert to fraction form
    215,606.44/323,444.22 = 90,965.80/x
  3. Step 3: Cross multiply
    215,606.44x = 323,444.22 × 90,965.80
  4. Step 4: Simplify right side
    215,606.44x = 29,422,362,227.68
  5. Step 5: Solve for x
    x = 29,422,362,227.68/215,606.44
  6. Step 6: Final answer
    x = 136,463.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.