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Finding the Fourth Proportional to 202,987.80, 304,500.90 and 55,243.80

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Solution

The fourth proportional to 202,987.80, 304,500.90 and 55,243.80 is: 82,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,987.80 : 304,500.90 = 55,243.80 : x
  2. Step 2: Convert to fraction form
    202,987.80/304,500.90 = 55,243.80/x
  3. Step 3: Cross multiply
    202,987.80x = 304,500.90 × 55,243.80
  4. Step 4: Simplify right side
    202,987.80x = 16,821,786,819.42
  5. Step 5: Solve for x
    x = 16,821,786,819.42/202,987.80
  6. Step 6: Final answer
    x = 82,870.93

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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.