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Finding the Fourth Proportional to 355,129.62, 490,075.98 and 193,984.72

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Solution

The fourth proportional to 355,129.62, 490,075.98 and 193,984.72 is: 267,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,129.62 : 490,075.98 = 193,984.72 : x
  2. Step 2: Convert to fraction form
    355,129.62/490,075.98 = 193,984.72/x
  3. Step 3: Cross multiply
    355,129.62x = 490,075.98 × 193,984.72
  4. Step 4: Simplify right side
    355,129.62x = 95,067,251,759.03
  5. Step 5: Solve for x
    x = 95,067,251,759.03/355,129.62
  6. Step 6: Final answer
    x = 267,697.33

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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.