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Finding the Fourth Proportional to 354,498.22, 489,213.38 and 193,353.28

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Solution

The fourth proportional to 354,498.22, 489,213.38 and 193,353.28 is: 266,830.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,498.22 : 489,213.38 = 193,353.28 : x
  2. Step 2: Convert to fraction form
    354,498.22/489,213.38 = 193,353.28/x
  3. Step 3: Cross multiply
    354,498.22x = 489,213.38 × 193,353.28
  4. Step 4: Simplify right side
    354,498.22x = 94,591,011,642.89
  5. Step 5: Solve for x
    x = 94,591,011,642.89/354,498.22
  6. Step 6: Final answer
    x = 266,830.71

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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.