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Finding the Fourth Proportional to 355,885.20, 491,117.40 and 194,738.40

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Solution

The fourth proportional to 355,885.20, 491,117.40 and 194,738.40 is: 268,736.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,885.20 : 491,117.40 = 194,738.40 : x
  2. Step 2: Convert to fraction form
    355,885.20/491,117.40 = 194,738.40/x
  3. Step 3: Cross multiply
    355,885.20x = 491,117.40 × 194,738.40
  4. Step 4: Simplify right side
    355,885.20x = 95,639,416,688.16
  5. Step 5: Solve for x
    x = 95,639,416,688.16/355,885.20
  6. Step 6: Final answer
    x = 268,736.71

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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.