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Finding the Fourth Proportional to 217,796.88, 300,660.72 and 145,320.24

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Solution

The fourth proportional to 217,796.88, 300,660.72 and 145,320.24 is: 200,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,796.88 : 300,660.72 = 145,320.24 : x
  2. Step 2: Convert to fraction form
    217,796.88/300,660.72 = 145,320.24/x
  3. Step 3: Cross multiply
    217,796.88x = 300,660.72 × 145,320.24
  4. Step 4: Simplify right side
    217,796.88x = 43,692,087,988.97
  5. Step 5: Solve for x
    x = 43,692,087,988.97/217,796.88
  6. Step 6: Final answer
    x = 200,609.34

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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.