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Finding the Fourth Proportional to 255,808.26, 383,713.52 and 66,255.17

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Solution

The fourth proportional to 255,808.26, 383,713.52 and 66,255.17 is: 99,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,808.26 : 383,713.52 = 66,255.17 : x
  2. Step 2: Convert to fraction form
    255,808.26/383,713.52 = 66,255.17/x
  3. Step 3: Cross multiply
    255,808.26x = 383,713.52 × 66,255.17
  4. Step 4: Simplify right side
    255,808.26x = 25,423,002,249.06
  5. Step 5: Solve for x
    x = 25,423,002,249.06/255,808.26
  6. Step 6: Final answer
    x = 99,383.04

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1.5x scale

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.