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Finding the Fourth Proportional to 255,859.08, 383,785.92 and 87,377.48

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Solution

The fourth proportional to 255,859.08, 383,785.92 and 87,377.48 is: 131,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,859.08 : 383,785.92 = 87,377.48 : x
  2. Step 2: Convert to fraction form
    255,859.08/383,785.92 = 87,377.48/x
  3. Step 3: Cross multiply
    255,859.08x = 383,785.92 × 87,377.48
  4. Step 4: Simplify right side
    255,859.08x = 33,534,246,549.08
  5. Step 5: Solve for x
    x = 33,534,246,549.08/255,859.08
  6. Step 6: Final answer
    x = 131,065.30

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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.