Home / 339,945,287.20-509,665,988.40-145,697,696.80

Finding the Fourth Proportional to 339,945,287.20, 509,665,988.40 and 145,697,696.80

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Solution

The fourth proportional to 339,945,287.20, 509,665,988.40 and 145,697,696.80 is: 218,438,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,945,287.20 : 509,665,988.40 = 145,697,696.80 : x
  2. Step 2: Convert to fraction form
    339,945,287.20/509,665,988.40 = 145,697,696.80/x
  3. Step 3: Cross multiply
    339,945,287.20x = 509,665,988.40 × 145,697,696.80
  4. Step 4: Simplify right side
    339,945,287.20x = 74,257,160,647,175,520
  5. Step 5: Solve for x
    x = 74,257,160,647,175,520/339,945,287.20
  6. Step 6: Final answer
    x = 218,438,564.80

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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.