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Finding the Fourth Proportional to 408,661.06, 613,045.15 and 135,016.35

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Solution

The fourth proportional to 408,661.06, 613,045.15 and 135,016.35 is: 202,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,661.06 : 613,045.15 = 135,016.35 : x
  2. Step 2: Convert to fraction form
    408,661.06/613,045.15 = 135,016.35/x
  3. Step 3: Cross multiply
    408,661.06x = 613,045.15 × 135,016.35
  4. Step 4: Simplify right side
    408,661.06x = 82,771,121,005.89
  5. Step 5: Solve for x
    x = 82,771,121,005.89/408,661.06
  6. Step 6: Final answer
    x = 202,542.23

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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.