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Finding the Fourth Proportional to 205,691,483.43, 308,531,246.40 and 60,128,464.86

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Solution

The fourth proportional to 205,691,483.43, 308,531,246.40 and 60,128,464.86 is: 90,190,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,691,483.43 : 308,531,246.40 = 60,128,464.86 : x
  2. Step 2: Convert to fraction form
    205,691,483.43/308,531,246.40 = 60,128,464.86/x
  3. Step 3: Cross multiply
    205,691,483.43x = 308,531,246.40 × 60,128,464.86
  4. Step 4: Simplify right side
    205,691,483.43x = 18,551,510,207,374,400
  5. Step 5: Solve for x
    x = 18,551,510,207,374,400/205,691,483.43
  6. Step 6: Final answer
    x = 90,190,949.56

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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.