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Finding the Fourth Proportional to 245,425.80, 368,142.10 and 161,721.80

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Solution

The fourth proportional to 245,425.80, 368,142.10 and 161,721.80 is: 242,584.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,425.80 : 368,142.10 = 161,721.80 : x
  2. Step 2: Convert to fraction form
    245,425.80/368,142.10 = 161,721.80/x
  3. Step 3: Cross multiply
    245,425.80x = 368,142.10 × 161,721.80
  4. Step 4: Simplify right side
    245,425.80x = 59,536,603,067.78
  5. Step 5: Solve for x
    x = 59,536,603,067.78/245,425.80
  6. Step 6: Final answer
    x = 242,584.94

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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.