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Finding the Fourth Proportional to 404,208,002.80, 606,312,004.20 and 220,541,993.20

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Solution

The fourth proportional to 404,208,002.80, 606,312,004.20 and 220,541,993.20 is: 330,812,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,208,002.80 : 606,312,004.20 = 220,541,993.20 : x
  2. Step 2: Convert to fraction form
    404,208,002.80/606,312,004.20 = 220,541,993.20/x
  3. Step 3: Cross multiply
    404,208,002.80x = 606,312,004.20 × 220,541,993.20
  4. Step 4: Simplify right side
    404,208,002.80x = 133,717,257,907,354,768
  5. Step 5: Solve for x
    x = 133,717,257,907,354,768/404,208,002.80
  6. Step 6: Final answer
    x = 330,812,989.80

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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.