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Finding the Fourth Proportional to 275,735.40, 413,603.10 and 220,439.40

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Solution

The fourth proportional to 275,735.40, 413,603.10 and 220,439.40 is: 330,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,735.40 : 413,603.10 = 220,439.40 : x
  2. Step 2: Convert to fraction form
    275,735.40/413,603.10 = 220,439.40/x
  3. Step 3: Cross multiply
    275,735.40x = 413,603.10 × 220,439.40
  4. Step 4: Simplify right side
    275,735.40x = 91,174,419,202.14
  5. Step 5: Solve for x
    x = 91,174,419,202.14/275,735.40
  6. Step 6: Final answer
    x = 330,659.10

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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.