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Finding the Fourth Proportional to 256,553.70, 384,872.67 and 79,060.74

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Solution

The fourth proportional to 256,553.70, 384,872.67 and 79,060.74 is: 118,604.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,553.70 : 384,872.67 = 79,060.74 : x
  2. Step 2: Convert to fraction form
    256,553.70/384,872.67 = 79,060.74/x
  3. Step 3: Cross multiply
    256,553.70x = 384,872.67 × 79,060.74
  4. Step 4: Simplify right side
    256,553.70x = 30,428,318,095.98
  5. Step 5: Solve for x
    x = 30,428,318,095.98/256,553.70
  6. Step 6: Final answer
    x = 118,604.09

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1.5x scale

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.