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Finding the Fourth Proportional to 501,353.46, 691,900.65 and 274,998.96

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Solution

The fourth proportional to 501,353.46, 691,900.65 and 274,998.96 is: 379,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,353.46 : 691,900.65 = 274,998.96 : x
  2. Step 2: Convert to fraction form
    501,353.46/691,900.65 = 274,998.96/x
  3. Step 3: Cross multiply
    501,353.46x = 691,900.65 × 274,998.96
  4. Step 4: Simplify right side
    501,353.46x = 190,271,959,173.32
  5. Step 5: Solve for x
    x = 190,271,959,173.32/501,353.46
  6. Step 6: Final answer
    x = 379,516.60

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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.