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Finding the Fourth Proportional to 354,956.79, 489,860.23 and 193,826.80

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Solution

The fourth proportional to 354,956.79, 489,860.23 and 193,826.80 is: 267,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,956.79 : 489,860.23 = 193,826.80 : x
  2. Step 2: Convert to fraction form
    354,956.79/489,860.23 = 193,826.80/x
  3. Step 3: Cross multiply
    354,956.79x = 489,860.23 × 193,826.80
  4. Step 4: Simplify right side
    354,956.79x = 94,948,039,859.03
  5. Step 5: Solve for x
    x = 94,948,039,859.03/354,956.79
  6. Step 6: Final answer
    x = 267,491.83

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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.