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Finding the Fourth Proportional to 245,991.44, 339,451.08 and 145,370

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Solution

The fourth proportional to 245,991.44, 339,451.08 and 145,370 is: 200,600.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,991.44 : 339,451.08 = 145,370 : x
  2. Step 2: Convert to fraction form
    245,991.44/339,451.08 = 145,370/x
  3. Step 3: Cross multiply
    245,991.44x = 339,451.08 × 145,370
  4. Step 4: Simplify right side
    245,991.44x = 49,346,003,499.60
  5. Step 5: Solve for x
    x = 49,346,003,499.60/245,991.44
  6. Step 6: Final answer
    x = 200,600.49

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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.