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Finding the Fourth Proportional to 255,752.46, 383,865.30 and 129,481.43

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Solution

The fourth proportional to 255,752.46, 383,865.30 and 129,481.43 is: 194,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,752.46 : 383,865.30 = 129,481.43 : x
  2. Step 2: Convert to fraction form
    255,752.46/383,865.30 = 129,481.43/x
  3. Step 3: Cross multiply
    255,752.46x = 383,865.30 × 129,481.43
  4. Step 4: Simplify right side
    255,752.46x = 49,703,426,052.05
  5. Step 5: Solve for x
    x = 49,703,426,052.05/255,752.46
  6. Step 6: Final answer
    x = 194,341.93

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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.