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Finding the Fourth Proportional to 355,446.50, 490,516.20 and 194,302.20

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Solution

The fourth proportional to 355,446.50, 490,516.20 and 194,302.20 is: 268,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,446.50 : 490,516.20 = 194,302.20 : x
  2. Step 2: Convert to fraction form
    355,446.50/490,516.20 = 194,302.20/x
  3. Step 3: Cross multiply
    355,446.50x = 490,516.20 × 194,302.20
  4. Step 4: Simplify right side
    355,446.50x = 95,308,376,795.64
  5. Step 5: Solve for x
    x = 95,308,376,795.64/355,446.50
  6. Step 6: Final answer
    x = 268,137.06

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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.