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Finding the Fourth Proportional to 354,990.27, 489,906.51 and 193,860.30

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Solution

The fourth proportional to 354,990.27, 489,906.51 and 193,860.30 is: 267,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,990.27 : 489,906.51 = 193,860.30 : x
  2. Step 2: Convert to fraction form
    354,990.27/489,906.51 = 193,860.30/x
  3. Step 3: Cross multiply
    354,990.27x = 489,906.51 × 193,860.30
  4. Step 4: Simplify right side
    354,990.27x = 94,973,423,000.55
  5. Step 5: Solve for x
    x = 94,973,423,000.55/354,990.27
  6. Step 6: Final answer
    x = 267,538.10

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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.