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Finding the Fourth Proportional to 336,994,279.80, 505,491,419.70 and 279,551,412.60

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Solution

The fourth proportional to 336,994,279.80, 505,491,419.70 and 279,551,412.60 is: 419,327,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,994,279.80 : 505,491,419.70 = 279,551,412.60 : x
  2. Step 2: Convert to fraction form
    336,994,279.80/505,491,419.70 = 279,551,412.60/x
  3. Step 3: Cross multiply
    336,994,279.80x = 505,491,419.70 × 279,551,412.60
  4. Step 4: Simplify right side
    336,994,279.80x = 141,310,840,434,314,480
  5. Step 5: Solve for x
    x = 141,310,840,434,314,480/336,994,279.80
  6. Step 6: Final answer
    x = 419,327,118.90

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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.