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Finding the Fourth Proportional to 245,389.86, 339,241.86 and 243,144.54

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Solution

The fourth proportional to 245,389.86, 339,241.86 and 243,144.54 is: 336,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,389.86 : 339,241.86 = 243,144.54 : x
  2. Step 2: Convert to fraction form
    245,389.86/339,241.86 = 243,144.54/x
  3. Step 3: Cross multiply
    245,389.86x = 339,241.86 × 243,144.54
  4. Step 4: Simplify right side
    245,389.86x = 82,484,805,998.44
  5. Step 5: Solve for x
    x = 82,484,805,998.44/245,389.86
  6. Step 6: Final answer
    x = 336,137.79

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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.