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Finding the Fourth Proportional to 306,489.66, 422,951.67 and 172,353.66

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Solution

The fourth proportional to 306,489.66, 422,951.67 and 172,353.66 is: 237,845.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,489.66 : 422,951.67 = 172,353.66 : x
  2. Step 2: Convert to fraction form
    306,489.66/422,951.67 = 172,353.66/x
  3. Step 3: Cross multiply
    306,489.66x = 422,951.67 × 172,353.66
  4. Step 4: Simplify right side
    306,489.66x = 72,897,268,327.61
  5. Step 5: Solve for x
    x = 72,897,268,327.61/306,489.66
  6. Step 6: Final answer
    x = 237,845.77

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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.