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Finding the Fourth Proportional to 543,922.28, 815,492.61 and 255,571.32

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Solution

The fourth proportional to 543,922.28, 815,492.61 and 255,571.32 is: 383,173.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,922.28 : 815,492.61 = 255,571.32 : x
  2. Step 2: Convert to fraction form
    543,922.28/815,492.61 = 255,571.32/x
  3. Step 3: Cross multiply
    543,922.28x = 815,492.61 × 255,571.32
  4. Step 4: Simplify right side
    543,922.28x = 208,416,522,787.95
  5. Step 5: Solve for x
    x = 208,416,522,787.95/543,922.28
  6. Step 6: Final answer
    x = 383,173.35

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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.