Home / 340,111.20-509,583.60-221,721.60

Finding the Fourth Proportional to 340,111.20, 509,583.60 and 221,721.60

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Solution

The fourth proportional to 340,111.20, 509,583.60 and 221,721.60 is: 332,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,111.20 : 509,583.60 = 221,721.60 : x
  2. Step 2: Convert to fraction form
    340,111.20/509,583.60 = 221,721.60/x
  3. Step 3: Cross multiply
    340,111.20x = 509,583.60 × 221,721.60
  4. Step 4: Simplify right side
    340,111.20x = 112,985,691,125.76
  5. Step 5: Solve for x
    x = 112,985,691,125.76/340,111.20
  6. Step 6: Final answer
    x = 332,202.21

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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.