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Finding the Fourth Proportional to 339,129.31, 508,688.79 and 114,647.43

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Solution

The fourth proportional to 339,129.31, 508,688.79 and 114,647.43 is: 171,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,129.31 : 508,688.79 = 114,647.43 : x
  2. Step 2: Convert to fraction form
    339,129.31/508,688.79 = 114,647.43/x
  3. Step 3: Cross multiply
    339,129.31x = 508,688.79 × 114,647.43
  4. Step 4: Simplify right side
    339,129.31x = 58,319,862,443.31
  5. Step 5: Solve for x
    x = 58,319,862,443.31/339,129.31
  6. Step 6: Final answer
    x = 171,969.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.