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Finding the Fourth Proportional to 298,638.28, 447,951.96 and 73,999.30

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Solution

The fourth proportional to 298,638.28, 447,951.96 and 73,999.30 is: 110,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,638.28 : 447,951.96 = 73,999.30 : x
  2. Step 2: Convert to fraction form
    298,638.28/447,951.96 = 73,999.30/x
  3. Step 3: Cross multiply
    298,638.28x = 447,951.96 × 73,999.30
  4. Step 4: Simplify right side
    298,638.28x = 33,148,131,473.63
  5. Step 5: Solve for x
    x = 33,148,131,473.63/298,638.28
  6. Step 6: Final answer
    x = 110,997.60

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1.5x scale

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.