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Finding the Fourth Proportional to 347,196, 479,133.36 and 188,220

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Solution

The fourth proportional to 347,196, 479,133.36 and 188,220 is: 259,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,196 : 479,133.36 = 188,220 : x
  2. Step 2: Convert to fraction form
    347,196/479,133.36 = 188,220/x
  3. Step 3: Cross multiply
    347,196x = 479,133.36 × 188,220
  4. Step 4: Simplify right side
    347,196x = 90,182,481,019.20
  5. Step 5: Solve for x
    x = 90,182,481,019.20/347,196
  6. Step 6: Final answer
    x = 259,745.16

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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.