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Finding the Fourth Proportional to 298,855.80, 447,890.10 and 219,598.20

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Solution

The fourth proportional to 298,855.80, 447,890.10 and 219,598.20 is: 329,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,855.80 : 447,890.10 = 219,598.20 : x
  2. Step 2: Convert to fraction form
    298,855.80/447,890.10 = 219,598.20/x
  3. Step 3: Cross multiply
    298,855.80x = 447,890.10 × 219,598.20
  4. Step 4: Simplify right side
    298,855.80x = 98,355,859,757.82
  5. Step 5: Solve for x
    x = 98,355,859,757.82/298,855.80
  6. Step 6: Final answer
    x = 329,108.08

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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.