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Finding the Fourth Proportional to 339,539.40, 508,937.10 and 170,790.60

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Solution

The fourth proportional to 339,539.40, 508,937.10 and 170,790.60 is: 255,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,539.40 : 508,937.10 = 170,790.60 : x
  2. Step 2: Convert to fraction form
    339,539.40/508,937.10 = 170,790.60/x
  3. Step 3: Cross multiply
    339,539.40x = 508,937.10 × 170,790.60
  4. Step 4: Simplify right side
    339,539.40x = 86,921,672,671.26
  5. Step 5: Solve for x
    x = 86,921,672,671.26/339,539.40
  6. Step 6: Final answer
    x = 255,998.78

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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.