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Finding the Fourth Proportional to 255,772.92, 383,895.72 and 129,501.84

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Solution

The fourth proportional to 255,772.92, 383,895.72 and 129,501.84 is: 194,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,772.92 : 383,895.72 = 129,501.84 : x
  2. Step 2: Convert to fraction form
    255,772.92/383,895.72 = 129,501.84/x
  3. Step 3: Cross multiply
    255,772.92x = 383,895.72 × 129,501.84
  4. Step 4: Simplify right side
    255,772.92x = 49,715,202,108.12
  5. Step 5: Solve for x
    x = 49,715,202,108.12/255,772.92
  6. Step 6: Final answer
    x = 194,372.42

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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.