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Finding the Fourth Proportional to 255,955.45, 383,379.11 and 166,938.91

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Solution

The fourth proportional to 255,955.45, 383,379.11 and 166,938.91 is: 250,046.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,955.45 : 383,379.11 = 166,938.91 : x
  2. Step 2: Convert to fraction form
    255,955.45/383,379.11 = 166,938.91/x
  3. Step 3: Cross multiply
    255,955.45x = 383,379.11 × 166,938.91
  4. Step 4: Simplify right side
    255,955.45x = 64,000,889,905.48
  5. Step 5: Solve for x
    x = 64,000,889,905.48/255,955.45
  6. Step 6: Final answer
    x = 250,046.99

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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.