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Finding the Fourth Proportional to 355,702.55, 490,865.94 and 194,560.74

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Solution

The fourth proportional to 355,702.55, 490,865.94 and 194,560.74 is: 268,491.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,702.55 : 490,865.94 = 194,560.74 : x
  2. Step 2: Convert to fraction form
    355,702.55/490,865.94 = 194,560.74/x
  3. Step 3: Cross multiply
    355,702.55x = 490,865.94 × 194,560.74
  4. Step 4: Simplify right side
    355,702.55x = 95,503,240,527.20
  5. Step 5: Solve for x
    x = 95,503,240,527.20/355,702.55
  6. Step 6: Final answer
    x = 268,491.87

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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.