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Finding the Fourth Proportional to 368,736,311.80, 553,104,467.70 and 252,510,165.10

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Solution

The fourth proportional to 368,736,311.80, 553,104,467.70 and 252,510,165.10 is: 378,765,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,736,311.80 : 553,104,467.70 = 252,510,165.10 : x
  2. Step 2: Convert to fraction form
    368,736,311.80/553,104,467.70 = 252,510,165.10/x
  3. Step 3: Cross multiply
    368,736,311.80x = 553,104,467.70 × 252,510,165.10
  4. Step 4: Simplify right side
    368,736,311.80x = 139,664,500,456,474,624
  5. Step 5: Solve for x
    x = 139,664,500,456,474,624/368,736,311.80
  6. Step 6: Final answer
    x = 378,765,247.65

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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.