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Finding the Fourth Proportional to 519,836, 717,375.84 and 281,372

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Solution

The fourth proportional to 519,836, 717,375.84 and 281,372 is: 388,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,836 : 717,375.84 = 281,372 : x
  2. Step 2: Convert to fraction form
    519,836/717,375.84 = 281,372/x
  3. Step 3: Cross multiply
    519,836x = 717,375.84 × 281,372
  4. Step 4: Simplify right side
    519,836x = 201,849,474,852.48
  5. Step 5: Solve for x
    x = 201,849,474,852.48/519,836
  6. Step 6: Final answer
    x = 388,294.53

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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.