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Finding the Fourth Proportional to 355,238.72, 490,223.70 and 194,090.32

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Solution

The fourth proportional to 355,238.72, 490,223.70 and 194,090.32 is: 267,841.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,238.72 : 490,223.70 = 194,090.32 : x
  2. Step 2: Convert to fraction form
    355,238.72/490,223.70 = 194,090.32/x
  3. Step 3: Cross multiply
    355,238.72x = 490,223.70 × 194,090.32
  4. Step 4: Simplify right side
    355,238.72x = 95,147,674,804.58
  5. Step 5: Solve for x
    x = 95,147,674,804.58/355,238.72
  6. Step 6: Final answer
    x = 267,841.51

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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.