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Finding the Fourth Proportional to 519,736.75, 717,236.72 and 281,272.75

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Solution

The fourth proportional to 519,736.75, 717,236.72 and 281,272.75 is: 388,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,736.75 : 717,236.72 = 281,272.75 : x
  2. Step 2: Convert to fraction form
    519,736.75/717,236.72 = 281,272.75/x
  3. Step 3: Cross multiply
    519,736.75x = 717,236.72 × 281,272.75
  4. Step 4: Simplify right side
    519,736.75x = 201,739,144,635.38
  5. Step 5: Solve for x
    x = 201,739,144,635.38/519,736.75
  6. Step 6: Final answer
    x = 388,156.40

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1.5x scale

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.