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Finding the Fourth Proportional to 230,620.43, 318,135.17 and 187,647.90

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Solution

The fourth proportional to 230,620.43, 318,135.17 and 187,647.90 is: 258,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,620.43 : 318,135.17 = 187,647.90 : x
  2. Step 2: Convert to fraction form
    230,620.43/318,135.17 = 187,647.90/x
  3. Step 3: Cross multiply
    230,620.43x = 318,135.17 × 187,647.90
  4. Step 4: Simplify right side
    230,620.43x = 59,697,395,628.40
  5. Step 5: Solve for x
    x = 59,697,395,628.40/230,620.43
  6. Step 6: Final answer
    x = 258,855.63

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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.