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Finding the Fourth Proportional to 245,942.40, 368,863.20 and 68,404.80

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Solution

The fourth proportional to 245,942.40, 368,863.20 and 68,404.80 is: 102,593.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,942.40 : 368,863.20 = 68,404.80 : x
  2. Step 2: Convert to fraction form
    245,942.40/368,863.20 = 68,404.80/x
  3. Step 3: Cross multiply
    245,942.40x = 368,863.20 × 68,404.80
  4. Step 4: Simplify right side
    245,942.40x = 25,232,013,423.36
  5. Step 5: Solve for x
    x = 25,232,013,423.36/245,942.40
  6. Step 6: Final answer
    x = 102,593.18

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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.