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Finding the Fourth Proportional to 252,389,423.70, 378,584,135.55 and 240,485,145.30

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Solution

The fourth proportional to 252,389,423.70, 378,584,135.55 and 240,485,145.30 is: 360,727,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,389,423.70 : 378,584,135.55 = 240,485,145.30 : x
  2. Step 2: Convert to fraction form
    252,389,423.70/378,584,135.55 = 240,485,145.30/x
  3. Step 3: Cross multiply
    252,389,423.70x = 378,584,135.55 × 240,485,145.30
  4. Step 4: Simplify right side
    252,389,423.70x = 91,043,860,846,016,656
  5. Step 5: Solve for x
    x = 91,043,860,846,016,656/252,389,423.70
  6. Step 6: Final answer
    x = 360,727,717.95

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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.