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Finding the Fourth Proportional to 424,101.09, 636,467.00 and 171,383.78

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Solution

The fourth proportional to 424,101.09, 636,467.00 and 171,383.78 is: 257,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,101.09 : 636,467.00 = 171,383.78 : x
  2. Step 2: Convert to fraction form
    424,101.09/636,467.00 = 171,383.78/x
  3. Step 3: Cross multiply
    424,101.09x = 636,467.00 × 171,383.78
  4. Step 4: Simplify right side
    424,101.09x = 109,080,116,266.01
  5. Step 5: Solve for x
    x = 109,080,116,266.01/424,101.09
  6. Step 6: Final answer
    x = 257,203.10

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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.