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Finding the Fourth Proportional to 355,999.46, 491,280.26 and 194,855.76

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Solution

The fourth proportional to 355,999.46, 491,280.26 and 194,855.76 is: 268,901.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,999.46 : 491,280.26 = 194,855.76 : x
  2. Step 2: Convert to fraction form
    355,999.46/491,280.26 = 194,855.76/x
  3. Step 3: Cross multiply
    355,999.46x = 491,280.26 × 194,855.76
  4. Step 4: Simplify right side
    355,999.46x = 95,728,787,461.02
  5. Step 5: Solve for x
    x = 95,728,787,461.02/355,999.46
  6. Step 6: Final answer
    x = 268,901.50

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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.