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Finding the Fourth Proportional to 354,135.31, 488,694.31 and 192,987.07

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Solution

The fourth proportional to 354,135.31, 488,694.31 and 192,987.07 is: 266,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,135.31 : 488,694.31 = 192,987.07 : x
  2. Step 2: Convert to fraction form
    354,135.31/488,694.31 = 192,987.07/x
  3. Step 3: Cross multiply
    354,135.31x = 488,694.31 × 192,987.07
  4. Step 4: Simplify right side
    354,135.31x = 94,311,683,012.57
  5. Step 5: Solve for x
    x = 94,311,683,012.57/354,135.31
  6. Step 6: Final answer
    x = 266,315.39

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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.