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Finding the Fourth Proportional to 440,999.40, 661,844.70 and 204,371.40

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Solution

The fourth proportional to 440,999.40, 661,844.70 and 204,371.40 is: 306,717.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,999.40 : 661,844.70 = 204,371.40 : x
  2. Step 2: Convert to fraction form
    440,999.40/661,844.70 = 204,371.40/x
  3. Step 3: Cross multiply
    440,999.40x = 661,844.70 × 204,371.40
  4. Step 4: Simplify right side
    440,999.40x = 135,262,127,921.58
  5. Step 5: Solve for x
    x = 135,262,127,921.58/440,999.40
  6. Step 6: Final answer
    x = 306,717.26

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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.