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Finding the Fourth Proportional to 295,487,999.80, 443,231,999.70 and 279,615,628.60

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Solution

The fourth proportional to 295,487,999.80, 443,231,999.70 and 279,615,628.60 is: 419,423,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,487,999.80 : 443,231,999.70 = 279,615,628.60 : x
  2. Step 2: Convert to fraction form
    295,487,999.80/443,231,999.70 = 279,615,628.60/x
  3. Step 3: Cross multiply
    295,487,999.80x = 443,231,999.70 × 279,615,628.60
  4. Step 4: Simplify right side
    295,487,999.80x = 123,934,594,211,750,512
  5. Step 5: Solve for x
    x = 123,934,594,211,750,512/295,487,999.80
  6. Step 6: Final answer
    x = 419,423,442.90

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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.