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Finding the Fourth Proportional to 606,288.03, 909,181.81 and 206,961

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Solution

The fourth proportional to 606,288.03, 909,181.81 and 206,961 is: 310,356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,288.03 : 909,181.81 = 206,961 : x
  2. Step 2: Convert to fraction form
    606,288.03/909,181.81 = 206,961/x
  3. Step 3: Cross multiply
    606,288.03x = 909,181.81 × 206,961
  4. Step 4: Simplify right side
    606,288.03x = 188,165,176,579.41
  5. Step 5: Solve for x
    x = 188,165,176,579.41/606,288.03
  6. Step 6: Final answer
    x = 310,356.08

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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.