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Finding the Fourth Proportional to 519,738.75, 717,239.48 and 281,274.75

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Solution

The fourth proportional to 519,738.75, 717,239.48 and 281,274.75 is: 388,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,738.75 : 717,239.48 = 281,274.75 : x
  2. Step 2: Convert to fraction form
    519,738.75/717,239.48 = 281,274.75/x
  3. Step 3: Cross multiply
    519,738.75x = 717,239.48 × 281,274.75
  4. Step 4: Simplify right side
    519,738.75x = 201,741,354,020.76
  5. Step 5: Solve for x
    x = 201,741,354,020.76/519,738.75
  6. Step 6: Final answer
    x = 388,159.16

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