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Finding the Fourth Proportional to 255,672.08, 383,508.15 and 78,179.10

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Solution

The fourth proportional to 255,672.08, 383,508.15 and 78,179.10 is: 117,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,672.08 : 383,508.15 = 78,179.10 : x
  2. Step 2: Convert to fraction form
    255,672.08/383,508.15 = 78,179.10/x
  3. Step 3: Cross multiply
    255,672.08x = 383,508.15 × 78,179.10
  4. Step 4: Simplify right side
    255,672.08x = 29,982,320,092.12
  5. Step 5: Solve for x
    x = 29,982,320,092.12/255,672.08
  6. Step 6: Final answer
    x = 117,268.65

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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.