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Finding the Fourth Proportional to 202,809.20, 304,213.80 and 199,353.20

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Solution

The fourth proportional to 202,809.20, 304,213.80 and 199,353.20 is: 299,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,809.20 : 304,213.80 = 199,353.20 : x
  2. Step 2: Convert to fraction form
    202,809.20/304,213.80 = 199,353.20/x
  3. Step 3: Cross multiply
    202,809.20x = 304,213.80 × 199,353.20
  4. Step 4: Simplify right side
    202,809.20x = 60,645,994,514.16
  5. Step 5: Solve for x
    x = 60,645,994,514.16/202,809.20
  6. Step 6: Final answer
    x = 299,029.80

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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.