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Finding the Fourth Proportional to 383,128.84, 574,709.43 and 113,257.57

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Solution

The fourth proportional to 383,128.84, 574,709.43 and 113,257.57 is: 169,891.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,128.84 : 574,709.43 = 113,257.57 : x
  2. Step 2: Convert to fraction form
    383,128.84/574,709.43 = 113,257.57/x
  3. Step 3: Cross multiply
    383,128.84x = 574,709.43 × 113,257.57
  4. Step 4: Simplify right side
    383,128.84x = 65,090,193,497.89
  5. Step 5: Solve for x
    x = 65,090,193,497.89/383,128.84
  6. Step 6: Final answer
    x = 169,891.14

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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.