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Finding the Fourth Proportional to 329,485.41, 494,304.12 and 139,951.89

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Solution

The fourth proportional to 329,485.41, 494,304.12 and 139,951.89 is: 209,960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,485.41 : 494,304.12 = 139,951.89 : x
  2. Step 2: Convert to fraction form
    329,485.41/494,304.12 = 139,951.89/x
  3. Step 3: Cross multiply
    329,485.41x = 494,304.12 × 139,951.89
  4. Step 4: Simplify right side
    329,485.41x = 69,178,795,828.79
  5. Step 5: Solve for x
    x = 69,178,795,828.79/329,485.41
  6. Step 6: Final answer
    x = 209,960.12

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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.