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Finding the Fourth Proportional to 355,107.36, 490,045.25 and 193,962.51

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Solution

The fourth proportional to 355,107.36, 490,045.25 and 193,962.51 is: 267,666.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,107.36 : 490,045.25 = 193,962.51 : x
  2. Step 2: Convert to fraction form
    355,107.36/490,045.25 = 193,962.51/x
  3. Step 3: Cross multiply
    355,107.36x = 490,045.25 × 193,962.51
  4. Step 4: Simplify right side
    355,107.36x = 95,050,405,733.77
  5. Step 5: Solve for x
    x = 95,050,405,733.77/355,107.36
  6. Step 6: Final answer
    x = 267,666.67

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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.