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Finding the Fourth Proportional to 354,960.29, 489,865.05 and 193,830.30

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Solution

The fourth proportional to 354,960.29, 489,865.05 and 193,830.30 is: 267,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,960.29 : 489,865.05 = 193,830.30 : x
  2. Step 2: Convert to fraction form
    354,960.29/489,865.05 = 193,830.30/x
  3. Step 3: Cross multiply
    354,960.29x = 489,865.05 × 193,830.30
  4. Step 4: Simplify right side
    354,960.29x = 94,950,689,601.02
  5. Step 5: Solve for x
    x = 94,950,689,601.02/354,960.29
  6. Step 6: Final answer
    x = 267,496.65

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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.