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Finding the Fourth Proportional to 354,858.92, 489,716.90 and 193,722.56

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Solution

The fourth proportional to 354,858.92, 489,716.90 and 193,722.56 is: 267,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,858.92 : 489,716.90 = 193,722.56 : x
  2. Step 2: Convert to fraction form
    354,858.92/489,716.90 = 193,722.56/x
  3. Step 3: Cross multiply
    354,858.92x = 489,716.90 × 193,722.56
  4. Step 4: Simplify right side
    354,858.92x = 94,869,211,543.26
  5. Step 5: Solve for x
    x = 94,869,211,543.26/354,858.92
  6. Step 6: Final answer
    x = 267,343.46

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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.