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Finding the Fourth Proportional to 313,562.56, 432,550.46 and 198,638.44

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Solution

The fourth proportional to 313,562.56, 432,550.46 and 198,638.44 is: 274,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,562.56 : 432,550.46 = 198,638.44 : x
  2. Step 2: Convert to fraction form
    313,562.56/432,550.46 = 198,638.44/x
  3. Step 3: Cross multiply
    313,562.56x = 432,550.46 × 198,638.44
  4. Step 4: Simplify right side
    313,562.56x = 85,921,148,595.68
  5. Step 5: Solve for x
    x = 85,921,148,595.68/313,562.56
  6. Step 6: Final answer
    x = 274,015.97

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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.