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Finding the Fourth Proportional to 503,752.21, 695,125.20 and 285,891.51

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Solution

The fourth proportional to 503,752.21, 695,125.20 and 285,891.51 is: 394,500.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,752.21 : 695,125.20 = 285,891.51 : x
  2. Step 2: Convert to fraction form
    503,752.21/695,125.20 = 285,891.51/x
  3. Step 3: Cross multiply
    503,752.21x = 695,125.20 × 285,891.51
  4. Step 4: Simplify right side
    503,752.21x = 198,730,393,067.05
  5. Step 5: Solve for x
    x = 198,730,393,067.05/503,752.21
  6. Step 6: Final answer
    x = 394,500.29

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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.