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Finding the Fourth Proportional to 538,634.80, 807,972.62 and 201,640

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Solution

The fourth proportional to 538,634.80, 807,972.62 and 201,640 is: 302,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,634.80 : 807,972.62 = 201,640 : x
  2. Step 2: Convert to fraction form
    538,634.80/807,972.62 = 201,640/x
  3. Step 3: Cross multiply
    538,634.80x = 807,972.62 × 201,640
  4. Step 4: Simplify right side
    538,634.80x = 162,919,599,096.80
  5. Step 5: Solve for x
    x = 162,919,599,096.80/538,634.80
  6. Step 6: Final answer
    x = 302,467.64

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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.