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Finding the Fourth Proportional to 354,051.56, 531,540.30 and 210,219.90

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Solution

The fourth proportional to 354,051.56, 531,540.30 and 210,219.90 is: 315,604.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,051.56 : 531,540.30 = 210,219.90 : x
  2. Step 2: Convert to fraction form
    354,051.56/531,540.30 = 210,219.90/x
  3. Step 3: Cross multiply
    354,051.56x = 531,540.30 × 210,219.90
  4. Step 4: Simplify right side
    354,051.56x = 111,740,348,711.97
  5. Step 5: Solve for x
    x = 111,740,348,711.97/354,051.56
  6. Step 6: Final answer
    x = 315,604.74

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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.