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Finding the Fourth Proportional to 245,768.40, 367,961.40 and 220,885.20

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Solution

The fourth proportional to 245,768.40, 367,961.40 and 220,885.20 is: 330,706.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,768.40 : 367,961.40 = 220,885.20 : x
  2. Step 2: Convert to fraction form
    245,768.40/367,961.40 = 220,885.20/x
  3. Step 3: Cross multiply
    245,768.40x = 367,961.40 × 220,885.20
  4. Step 4: Simplify right side
    245,768.40x = 81,277,227,431.28
  5. Step 5: Solve for x
    x = 81,277,227,431.28/245,768.40
  6. Step 6: Final answer
    x = 330,706.58

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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.