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Finding the Fourth Proportional to 279,578,715.60, 419,494,044.60 and 133,956,008.40

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Solution

The fourth proportional to 279,578,715.60, 419,494,044.60 and 133,956,008.40 is: 200,994,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,578,715.60 : 419,494,044.60 = 133,956,008.40 : x
  2. Step 2: Convert to fraction form
    279,578,715.60/419,494,044.60 = 133,956,008.40/x
  3. Step 3: Cross multiply
    279,578,715.60x = 419,494,044.60 × 133,956,008.40
  4. Step 4: Simplify right side
    279,578,715.60x = 56,193,747,762,187,584
  5. Step 5: Solve for x
    x = 56,193,747,762,187,584/279,578,715.60
  6. Step 6: Final answer
    x = 200,994,369.84

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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.