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Finding the Fourth Proportional to 255,867.53, 383,850.50 and 78,376.07

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Solution

The fourth proportional to 255,867.53, 383,850.50 and 78,376.07 is: 117,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,867.53 : 383,850.50 = 78,376.07 : x
  2. Step 2: Convert to fraction form
    255,867.53/383,850.50 = 78,376.07/x
  3. Step 3: Cross multiply
    255,867.53x = 383,850.50 × 78,376.07
  4. Step 4: Simplify right side
    255,867.53x = 30,084,694,225.28
  5. Step 5: Solve for x
    x = 30,084,694,225.28/255,867.53
  6. Step 6: Final answer
    x = 117,579.18

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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.