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Finding the Fourth Proportional to 355,711.74, 490,855.59 and 194,558.46

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Solution

The fourth proportional to 355,711.74, 490,855.59 and 194,558.46 is: 268,476.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,711.74 : 490,855.59 = 194,558.46 : x
  2. Step 2: Convert to fraction form
    355,711.74/490,855.59 = 194,558.46/x
  3. Step 3: Cross multiply
    355,711.74x = 490,855.59 × 194,558.46
  4. Step 4: Simplify right side
    355,711.74x = 95,500,107,672.79
  5. Step 5: Solve for x
    x = 95,500,107,672.79/355,711.74
  6. Step 6: Final answer
    x = 268,476.12

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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.