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Finding the Fourth Proportional to 306,354.81, 422,707.05 and 179,005.80

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Solution

The fourth proportional to 306,354.81, 422,707.05 and 179,005.80 is: 246,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,354.81 : 422,707.05 = 179,005.80 : x
  2. Step 2: Convert to fraction form
    306,354.81/422,707.05 = 179,005.80/x
  3. Step 3: Cross multiply
    306,354.81x = 422,707.05 × 179,005.80
  4. Step 4: Simplify right side
    306,354.81x = 75,667,013,650.89
  5. Step 5: Solve for x
    x = 75,667,013,650.89/306,354.81
  6. Step 6: Final answer
    x = 246,991.43

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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.