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Finding the Fourth Proportional to 275,000.40, 411,809.40 and 219,704.40

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Solution

The fourth proportional to 275,000.40, 411,809.40 and 219,704.40 is: 329,004.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,000.40 : 411,809.40 = 219,704.40 : x
  2. Step 2: Convert to fraction form
    275,000.40/411,809.40 = 219,704.40/x
  3. Step 3: Cross multiply
    275,000.40x = 411,809.40 × 219,704.40
  4. Step 4: Simplify right side
    275,000.40x = 90,476,337,141.36
  5. Step 5: Solve for x
    x = 90,476,337,141.36/275,000.40
  6. Step 6: Final answer
    x = 329,004.38

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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.