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Finding the Fourth Proportional to 306,170.70, 422,514.27 and 172,034.70

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Solution

The fourth proportional to 306,170.70, 422,514.27 and 172,034.70 is: 237,407.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,170.70 : 422,514.27 = 172,034.70 : x
  2. Step 2: Convert to fraction form
    306,170.70/422,514.27 = 172,034.70/x
  3. Step 3: Cross multiply
    306,170.70x = 422,514.27 × 172,034.70
  4. Step 4: Simplify right side
    306,170.70x = 72,687,115,685.17
  5. Step 5: Solve for x
    x = 72,687,115,685.17/306,170.70
  6. Step 6: Final answer
    x = 237,407.16

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1.5x scale

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.