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Finding the Fourth Proportional to 354,355.56, 489,000.06 and 193,213.80

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Solution

The fourth proportional to 354,355.56, 489,000.06 and 193,213.80 is: 266,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,355.56 : 489,000.06 = 193,213.80 : x
  2. Step 2: Convert to fraction form
    354,355.56/489,000.06 = 193,213.80/x
  3. Step 3: Cross multiply
    354,355.56x = 489,000.06 × 193,213.80
  4. Step 4: Simplify right side
    354,355.56x = 94,481,559,792.83
  5. Step 5: Solve for x
    x = 94,481,559,792.83/354,355.56
  6. Step 6: Final answer
    x = 266,629.26

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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.