Home / 320,972.40-482,495.40-228,121.20

Finding the Fourth Proportional to 320,972.40, 482,495.40 and 228,121.20

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Solution

The fourth proportional to 320,972.40, 482,495.40 and 228,121.20 is: 342,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,972.40 : 482,495.40 = 228,121.20 : x
  2. Step 2: Convert to fraction form
    320,972.40/482,495.40 = 228,121.20/x
  3. Step 3: Cross multiply
    320,972.40x = 482,495.40 × 228,121.20
  4. Step 4: Simplify right side
    320,972.40x = 110,067,429,642.48
  5. Step 5: Solve for x
    x = 110,067,429,642.48/320,972.40
  6. Step 6: Final answer
    x = 342,918.67

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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.