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Finding the Fourth Proportional to 253,289.36, 379,914.32 and 103,489.76

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Solution

The fourth proportional to 253,289.36, 379,914.32 and 103,489.76 is: 155,226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,289.36 : 379,914.32 = 103,489.76 : x
  2. Step 2: Convert to fraction form
    253,289.36/379,914.32 = 103,489.76/x
  3. Step 3: Cross multiply
    253,289.36x = 379,914.32 × 103,489.76
  4. Step 4: Simplify right side
    253,289.36x = 39,317,241,797.36
  5. Step 5: Solve for x
    x = 39,317,241,797.36/253,289.36
  6. Step 6: Final answer
    x = 155,226.58

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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.