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Finding the Fourth Proportional to 317,455.82, 438,060.09 and 188,372.04

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Solution

The fourth proportional to 317,455.82, 438,060.09 and 188,372.04 is: 259,936.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,455.82 : 438,060.09 = 188,372.04 : x
  2. Step 2: Convert to fraction form
    317,455.82/438,060.09 = 188,372.04/x
  3. Step 3: Cross multiply
    317,455.82x = 438,060.09 × 188,372.04
  4. Step 4: Simplify right side
    317,455.82x = 82,518,272,795.88
  5. Step 5: Solve for x
    x = 82,518,272,795.88/317,455.82
  6. Step 6: Final answer
    x = 259,936.24

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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.