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Finding the Fourth Proportional to 252,045.20, 378,067.80 and 210,573.20

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Solution

The fourth proportional to 252,045.20, 378,067.80 and 210,573.20 is: 315,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,045.20 : 378,067.80 = 210,573.20 : x
  2. Step 2: Convert to fraction form
    252,045.20/378,067.80 = 210,573.20/x
  3. Step 3: Cross multiply
    252,045.20x = 378,067.80 × 210,573.20
  4. Step 4: Simplify right side
    252,045.20x = 79,610,946,462.96
  5. Step 5: Solve for x
    x = 79,610,946,462.96/252,045.20
  6. Step 6: Final answer
    x = 315,859.80

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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.