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Finding the Fourth Proportional to 329,486.91, 494,306.37 and 139,953.39

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Solution

The fourth proportional to 329,486.91, 494,306.37 and 139,953.39 is: 209,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,486.91 : 494,306.37 = 139,953.39 : x
  2. Step 2: Convert to fraction form
    329,486.91/494,306.37 = 139,953.39/x
  3. Step 3: Cross multiply
    329,486.91x = 494,306.37 × 139,953.39
  4. Step 4: Simplify right side
    329,486.91x = 69,179,852,180.09
  5. Step 5: Solve for x
    x = 69,179,852,180.09/329,486.91
  6. Step 6: Final answer
    x = 209,962.37

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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.