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Finding the Fourth Proportional to 339,955.20, 509,964.78 and 100,069.26

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Solution

The fourth proportional to 339,955.20, 509,964.78 and 100,069.26 is: 150,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,955.20 : 509,964.78 = 100,069.26 : x
  2. Step 2: Convert to fraction form
    339,955.20/509,964.78 = 100,069.26/x
  3. Step 3: Cross multiply
    339,955.20x = 509,964.78 × 100,069.26
  4. Step 4: Simplify right side
    339,955.20x = 51,031,798,160.66
  5. Step 5: Solve for x
    x = 51,031,798,160.66/339,955.20
  6. Step 6: Final answer
    x = 150,113.30

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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.