Home / 408,821.40-613,227.91-105,214.36

Finding the Fourth Proportional to 408,821.40, 613,227.91 and 105,214.36

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Solution

The fourth proportional to 408,821.40, 613,227.91 and 105,214.36 is: 157,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,821.40 : 613,227.91 = 105,214.36 : x
  2. Step 2: Convert to fraction form
    408,821.40/613,227.91 = 105,214.36/x
  3. Step 3: Cross multiply
    408,821.40x = 613,227.91 × 105,214.36
  4. Step 4: Simplify right side
    408,821.40x = 64,520,383,354.82
  5. Step 5: Solve for x
    x = 64,520,383,354.82/408,821.40
  6. Step 6: Final answer
    x = 157,820.47

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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.