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Finding the Fourth Proportional to 339,963.94, 469,161.40 and 187,013.89

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Solution

The fourth proportional to 339,963.94, 469,161.40 and 187,013.89 is: 258,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,963.94 : 469,161.40 = 187,013.89 : x
  2. Step 2: Convert to fraction form
    339,963.94/469,161.40 = 187,013.89/x
  3. Step 3: Cross multiply
    339,963.94x = 469,161.40 × 187,013.89
  4. Step 4: Simplify right side
    339,963.94x = 87,739,698,451.85
  5. Step 5: Solve for x
    x = 87,739,698,451.85/339,963.94
  6. Step 6: Final answer
    x = 258,085.31

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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.