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Finding the Fourth Proportional to 354,706.56, 489,505.50 and 193,572.05

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Solution

The fourth proportional to 354,706.56, 489,505.50 and 193,572.05 is: 267,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,706.56 : 489,505.50 = 193,572.05 : x
  2. Step 2: Convert to fraction form
    354,706.56/489,505.50 = 193,572.05/x
  3. Step 3: Cross multiply
    354,706.56x = 489,505.50 × 193,572.05
  4. Step 4: Simplify right side
    354,706.56x = 94,754,580,673.75
  5. Step 5: Solve for x
    x = 94,754,580,673.75/354,706.56
  6. Step 6: Final answer
    x = 267,135.12

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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.