Home / 255,984.22-383,961.97-78,490.74

Finding the Fourth Proportional to 255,984.22, 383,961.97 and 78,490.74

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Solution

The fourth proportional to 255,984.22, 383,961.97 and 78,490.74 is: 117,731.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,984.22 : 383,961.97 = 78,490.74 : x
  2. Step 2: Convert to fraction form
    255,984.22/383,961.97 = 78,490.74/x
  3. Step 3: Cross multiply
    255,984.22x = 383,961.97 × 78,490.74
  4. Step 4: Simplify right side
    255,984.22x = 30,137,459,157.16
  5. Step 5: Solve for x
    x = 30,137,459,157.16/255,984.22
  6. Step 6: Final answer
    x = 117,731.71

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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.