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Finding the Fourth Proportional to 252,661,787.70, 378,992,681.55 and 154,451,490.90

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Solution

The fourth proportional to 252,661,787.70, 378,992,681.55 and 154,451,490.90 is: 231,677,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,661,787.70 : 378,992,681.55 = 154,451,490.90 : x
  2. Step 2: Convert to fraction form
    252,661,787.70/378,992,681.55 = 154,451,490.90/x
  3. Step 3: Cross multiply
    252,661,787.70x = 378,992,681.55 × 154,451,490.90
  4. Step 4: Simplify right side
    252,661,787.70x = 58,535,984,705,586,424
  5. Step 5: Solve for x
    x = 58,535,984,705,586,424/252,661,787.70
  6. Step 6: Final answer
    x = 231,677,236.35

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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.