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Finding the Fourth Proportional to 276,881,330.80, 415,321,996.20 and 276,881,330.80

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Solution

The fourth proportional to 276,881,330.80, 415,321,996.20 and 276,881,330.80 is: 415,321,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,881,330.80 : 415,321,996.20 = 276,881,330.80 : x
  2. Step 2: Convert to fraction form
    276,881,330.80/415,321,996.20 = 276,881,330.80/x
  3. Step 3: Cross multiply
    276,881,330.80x = 415,321,996.20 × 276,881,330.80
  4. Step 4: Simplify right side
    276,881,330.80x = 114,994,907,018,368,544
  5. Step 5: Solve for x
    x = 114,994,907,018,368,544/276,881,330.80
  6. Step 6: Final answer
    x = 415,321,996.20

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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.