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Finding the Fourth Proportional to 408,848,302.80, 613,272,454.20 and 245,589,627.60

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Solution

The fourth proportional to 408,848,302.80, 613,272,454.20 and 245,589,627.60 is: 368,384,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,848,302.80 : 613,272,454.20 = 245,589,627.60 : x
  2. Step 2: Convert to fraction form
    408,848,302.80/613,272,454.20 = 245,589,627.60/x
  3. Step 3: Cross multiply
    408,848,302.80x = 613,272,454.20 × 245,589,627.60
  4. Step 4: Simplify right side
    408,848,302.80x = 150,613,353,644,316,064
  5. Step 5: Solve for x
    x = 150,613,353,644,316,064/408,848,302.80
  6. Step 6: Final answer
    x = 368,384,441.40

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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.