Home / 339,966.40-509,949.60-306,140.80

Finding the Fourth Proportional to 339,966.40, 509,949.60 and 306,140.80

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Solution

The fourth proportional to 339,966.40, 509,949.60 and 306,140.80 is: 459,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,966.40 : 509,949.60 = 306,140.80 : x
  2. Step 2: Convert to fraction form
    339,966.40/509,949.60 = 306,140.80/x
  3. Step 3: Cross multiply
    339,966.40x = 509,949.60 × 306,140.80
  4. Step 4: Simplify right side
    339,966.40x = 156,116,378,503.68
  5. Step 5: Solve for x
    x = 156,116,378,503.68/339,966.40
  6. Step 6: Final answer
    x = 459,211.20

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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.