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Finding the Fourth Proportional to 481,172.74, 663,973.39 and 287,542.02

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Solution

The fourth proportional to 481,172.74, 663,973.39 and 287,542.02 is: 396,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,172.74 : 663,973.39 = 287,542.02 : x
  2. Step 2: Convert to fraction form
    481,172.74/663,973.39 = 287,542.02/x
  3. Step 3: Cross multiply
    481,172.74x = 663,973.39 × 287,542.02
  4. Step 4: Simplify right side
    481,172.74x = 190,920,249,897.54
  5. Step 5: Solve for x
    x = 190,920,249,897.54/481,172.74
  6. Step 6: Final answer
    x = 396,781.11

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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.