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Finding the Fourth Proportional to 519,736.50, 717,236.37 and 281,272.50

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Solution

The fourth proportional to 519,736.50, 717,236.37 and 281,272.50 is: 388,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,736.50 : 717,236.37 = 281,272.50 : x
  2. Step 2: Convert to fraction form
    519,736.50/717,236.37 = 281,272.50/x
  3. Step 3: Cross multiply
    519,736.50x = 717,236.37 × 281,272.50
  4. Step 4: Simplify right side
    519,736.50x = 201,738,866,880.83
  5. Step 5: Solve for x
    x = 201,738,866,880.83/519,736.50
  6. Step 6: Final answer
    x = 388,156.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.