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Finding the Fourth Proportional to 489,059.67, 733,505.40 and 129,234.45

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Solution

The fourth proportional to 489,059.67, 733,505.40 and 129,234.45 is: 193,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,059.67 : 733,505.40 = 129,234.45 : x
  2. Step 2: Convert to fraction form
    489,059.67/733,505.40 = 129,234.45/x
  3. Step 3: Cross multiply
    489,059.67x = 733,505.40 × 129,234.45
  4. Step 4: Simplify right side
    489,059.67x = 94,794,166,941.03
  5. Step 5: Solve for x
    x = 94,794,166,941.03/489,059.67
  6. Step 6: Final answer
    x = 193,829.45

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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.