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Finding the Fourth Proportional to 347,106, 479,006.60 and 188,130

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Solution

The fourth proportional to 347,106, 479,006.60 and 188,130 is: 259,619.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,106 : 479,006.60 = 188,130 : x
  2. Step 2: Convert to fraction form
    347,106/479,006.60 = 188,130/x
  3. Step 3: Cross multiply
    347,106x = 479,006.60 × 188,130
  4. Step 4: Simplify right side
    347,106x = 90,115,511,658
  5. Step 5: Solve for x
    x = 90,115,511,658/347,106
  6. Step 6: Final answer
    x = 259,619.57

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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.