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Finding the Fourth Proportional to 404,208,012.80, 606,312,019.20 and 220,542,003.20

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Solution

The fourth proportional to 404,208,012.80, 606,312,019.20 and 220,542,003.20 is: 330,813,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,208,012.80 : 606,312,019.20 = 220,542,003.20 : x
  2. Step 2: Convert to fraction form
    404,208,012.80/606,312,019.20 = 220,542,003.20/x
  3. Step 3: Cross multiply
    404,208,012.80x = 606,312,019.20 × 220,542,003.20
  4. Step 4: Simplify right side
    404,208,012.80x = 133,717,267,278,604,864
  5. Step 5: Solve for x
    x = 133,717,267,278,604,864/404,208,012.80
  6. Step 6: Final answer
    x = 330,813,004.80

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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.