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Finding the Fourth Proportional to 355,808.76, 490,846.44 and 219,793.74

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Solution

The fourth proportional to 355,808.76, 490,846.44 and 219,793.74 is: 303,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,808.76 : 490,846.44 = 219,793.74 : x
  2. Step 2: Convert to fraction form
    355,808.76/490,846.44 = 219,793.74/x
  3. Step 3: Cross multiply
    355,808.76x = 490,846.44 × 219,793.74
  4. Step 4: Simplify right side
    355,808.76x = 107,884,974,813.29
  5. Step 5: Solve for x
    x = 107,884,974,813.29/355,808.76
  6. Step 6: Final answer
    x = 303,210.56

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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.