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Finding the Fourth Proportional to 339,980.48, 469,163.54 and 187,018.56

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Solution

The fourth proportional to 339,980.48, 469,163.54 and 187,018.56 is: 258,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,980.48 : 469,163.54 = 187,018.56 : x
  2. Step 2: Convert to fraction form
    339,980.48/469,163.54 = 187,018.56/x
  3. Step 3: Cross multiply
    339,980.48x = 469,163.54 × 187,018.56
  4. Step 4: Simplify right side
    339,980.48x = 87,742,289,655.30
  5. Step 5: Solve for x
    x = 87,742,289,655.30/339,980.48
  6. Step 6: Final answer
    x = 258,080.37

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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.