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Finding the Fourth Proportional to 355,290.39, 490,300.16 and 194,145.48

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Solution

The fourth proportional to 355,290.39, 490,300.16 and 194,145.48 is: 267,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,290.39 : 490,300.16 = 194,145.48 : x
  2. Step 2: Convert to fraction form
    355,290.39/490,300.16 = 194,145.48/x
  3. Step 3: Cross multiply
    355,290.39x = 490,300.16 × 194,145.48
  4. Step 4: Simplify right side
    355,290.39x = 95,189,558,936.55
  5. Step 5: Solve for x
    x = 95,189,558,936.55/355,290.39
  6. Step 6: Final answer
    x = 267,920.44

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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.