Home / 377,379,662.52-520,782,867.54-212,367,230.40

Finding the Fourth Proportional to 377,379,662.52, 520,782,867.54 and 212,367,230.40

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Solution

The fourth proportional to 377,379,662.52, 520,782,867.54 and 212,367,230.40 is: 293,066,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,379,662.52 : 520,782,867.54 = 212,367,230.40 : x
  2. Step 2: Convert to fraction form
    377,379,662.52/520,782,867.54 = 212,367,230.40/x
  3. Step 3: Cross multiply
    377,379,662.52x = 520,782,867.54 × 212,367,230.40
  4. Step 4: Simplify right side
    377,379,662.52x = 110,597,215,219,239,872
  5. Step 5: Solve for x
    x = 110,597,215,219,239,872/377,379,662.52
  6. Step 6: Final answer
    x = 293,066,177.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.