Home / 198,891.36-298,307.40-65,772.32

Finding the Fourth Proportional to 198,891.36, 298,307.40 and 65,772.32

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Solution

The fourth proportional to 198,891.36, 298,307.40 and 65,772.32 is: 98,648.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,891.36 : 298,307.40 = 65,772.32 : x
  2. Step 2: Convert to fraction form
    198,891.36/298,307.40 = 65,772.32/x
  3. Step 3: Cross multiply
    198,891.36x = 298,307.40 × 65,772.32
  4. Step 4: Simplify right side
    198,891.36x = 19,620,368,279.63
  5. Step 5: Solve for x
    x = 19,620,368,279.63/198,891.36
  6. Step 6: Final answer
    x = 98,648.67

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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.