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Finding the Fourth Proportional to 253,163.10, 379,744.65 and 103,353.60

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Solution

The fourth proportional to 253,163.10, 379,744.65 and 103,353.60 is: 155,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,163.10 : 379,744.65 = 103,353.60 : x
  2. Step 2: Convert to fraction form
    253,163.10/379,744.65 = 103,353.60/x
  3. Step 3: Cross multiply
    253,163.10x = 379,744.65 × 103,353.60
  4. Step 4: Simplify right side
    253,163.10x = 39,247,976,658.24
  5. Step 5: Solve for x
    x = 39,247,976,658.24/253,163.10
  6. Step 6: Final answer
    x = 155,030.40

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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.