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Finding the Fourth Proportional to 335,238.78, 503,174.12 and 122,212.65

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Solution

The fourth proportional to 335,238.78, 503,174.12 and 122,212.65 is: 183,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,238.78 : 503,174.12 = 122,212.65 : x
  2. Step 2: Convert to fraction form
    335,238.78/503,174.12 = 122,212.65/x
  3. Step 3: Cross multiply
    335,238.78x = 503,174.12 × 122,212.65
  4. Step 4: Simplify right side
    335,238.78x = 61,494,242,005.55
  5. Step 5: Solve for x
    x = 61,494,242,005.55/335,238.78
  6. Step 6: Final answer
    x = 183,434.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.