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Finding the Fourth Proportional to 354,452.15, 489,124.46 and 201,469.07

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Solution

The fourth proportional to 354,452.15, 489,124.46 and 201,469.07 is: 278,016.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,452.15 : 489,124.46 = 201,469.07 : x
  2. Step 2: Convert to fraction form
    354,452.15/489,124.46 = 201,469.07/x
  3. Step 3: Cross multiply
    354,452.15x = 489,124.46 × 201,469.07
  4. Step 4: Simplify right side
    354,452.15x = 98,543,446,617.48
  5. Step 5: Solve for x
    x = 98,543,446,617.48/354,452.15
  6. Step 6: Final answer
    x = 278,016.22

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1.5x scale

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.