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Finding the Fourth Proportional to 253,912.49, 380,307.17 and 103,697.26

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Solution

The fourth proportional to 253,912.49, 380,307.17 and 103,697.26 is: 155,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,912.49 : 380,307.17 = 103,697.26 : x
  2. Step 2: Convert to fraction form
    253,912.49/380,307.17 = 103,697.26/x
  3. Step 3: Cross multiply
    253,912.49x = 380,307.17 × 103,697.26
  4. Step 4: Simplify right side
    253,912.49x = 39,436,811,487.35
  5. Step 5: Solve for x
    x = 39,436,811,487.35/253,912.49
  6. Step 6: Final answer
    x = 155,316.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.