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Finding the Fourth Proportional to 481,397.58, 664,302.33 and 287,809.20

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Solution

The fourth proportional to 481,397.58, 664,302.33 and 287,809.20 is: 397,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,397.58 : 664,302.33 = 287,809.20 : x
  2. Step 2: Convert to fraction form
    481,397.58/664,302.33 = 287,809.20/x
  3. Step 3: Cross multiply
    481,397.58x = 664,302.33 × 287,809.20
  4. Step 4: Simplify right side
    481,397.58x = 191,192,322,155.44
  5. Step 5: Solve for x
    x = 191,192,322,155.44/481,397.58
  6. Step 6: Final answer
    x = 397,160.95

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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.