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Finding the Fourth Proportional to 355,758.67, 490,956.15 and 194,620.51

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Solution

The fourth proportional to 355,758.67, 490,956.15 and 194,620.51 is: 268,581.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,758.67 : 490,956.15 = 194,620.51 : x
  2. Step 2: Convert to fraction form
    355,758.67/490,956.15 = 194,620.51/x
  3. Step 3: Cross multiply
    355,758.67x = 490,956.15 × 194,620.51
  4. Step 4: Simplify right side
    355,758.67x = 95,550,136,300.64
  5. Step 5: Solve for x
    x = 95,550,136,300.64/355,758.67
  6. Step 6: Final answer
    x = 268,581.33

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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.