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Finding the Fourth Proportional to 347,257, 479,217.54 and 188,281

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Solution

The fourth proportional to 347,257, 479,217.54 and 188,281 is: 259,829.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,257 : 479,217.54 = 188,281 : x
  2. Step 2: Convert to fraction form
    347,257/479,217.54 = 188,281/x
  3. Step 3: Cross multiply
    347,257x = 479,217.54 × 188,281
  4. Step 4: Simplify right side
    347,257x = 90,227,557,648.74
  5. Step 5: Solve for x
    x = 90,227,557,648.74/347,257
  6. Step 6: Final answer
    x = 259,829.34

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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.