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Finding the Fourth Proportional to 225,747.20, 339,401.60 and 211,129.60

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Solution

The fourth proportional to 225,747.20, 339,401.60 and 211,129.60 is: 317,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,747.20 : 339,401.60 = 211,129.60 : x
  2. Step 2: Convert to fraction form
    225,747.20/339,401.60 = 211,129.60/x
  3. Step 3: Cross multiply
    225,747.20x = 339,401.60 × 211,129.60
  4. Step 4: Simplify right side
    225,747.20x = 71,657,724,047.36
  5. Step 5: Solve for x
    x = 71,657,724,047.36/225,747.20
  6. Step 6: Final answer
    x = 317,424.64

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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.