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Finding the Fourth Proportional to 339,377.28, 509,040 and 114,756.48

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Solution

The fourth proportional to 339,377.28, 509,040 and 114,756.48 is: 172,125.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,377.28 : 509,040 = 114,756.48 : x
  2. Step 2: Convert to fraction form
    339,377.28/509,040 = 114,756.48/x
  3. Step 3: Cross multiply
    339,377.28x = 509,040 × 114,756.48
  4. Step 4: Simplify right side
    339,377.28x = 58,415,638,579.20
  5. Step 5: Solve for x
    x = 58,415,638,579.20/339,377.28
  6. Step 6: Final answer
    x = 172,125.96

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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.