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Finding the Fourth Proportional to 306,188, 422,579.04 and 172,052

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Solution

The fourth proportional to 306,188, 422,579.04 and 172,052 is: 237,454.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,188 : 422,579.04 = 172,052 : x
  2. Step 2: Convert to fraction form
    306,188/422,579.04 = 172,052/x
  3. Step 3: Cross multiply
    306,188x = 422,579.04 × 172,052
  4. Step 4: Simplify right side
    306,188x = 72,705,568,990.08
  5. Step 5: Solve for x
    x = 72,705,568,990.08/306,188
  6. Step 6: Final answer
    x = 237,454.01

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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.