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Finding the Fourth Proportional to 355,154.31, 490,146.71 and 194,033.57

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Solution

The fourth proportional to 355,154.31, 490,146.71 and 194,033.57 is: 267,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,154.31 : 490,146.71 = 194,033.57 : x
  2. Step 2: Convert to fraction form
    355,154.31/490,146.71 = 194,033.57/x
  3. Step 3: Cross multiply
    355,154.31x = 490,146.71 × 194,033.57
  4. Step 4: Simplify right side
    355,154.31x = 95,104,912,544.15
  5. Step 5: Solve for x
    x = 95,104,912,544.15/355,154.31
  6. Step 6: Final answer
    x = 267,784.76

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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.