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Finding the Fourth Proportional to 647,371.69, 971,197.73 and 248,012.49

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Solution

The fourth proportional to 647,371.69, 971,197.73 and 248,012.49 is: 372,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,371.69 : 971,197.73 = 248,012.49 : x
  2. Step 2: Convert to fraction form
    647,371.69/971,197.73 = 248,012.49/x
  3. Step 3: Cross multiply
    647,371.69x = 971,197.73 × 248,012.49
  4. Step 4: Simplify right side
    647,371.69x = 240,869,170,631.62
  5. Step 5: Solve for x
    x = 240,869,170,631.62/647,371.69
  6. Step 6: Final answer
    x = 372,072.45

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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.