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Finding the Fourth Proportional to 245,395.68, 368,098.17 and 76,912.28

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Solution

The fourth proportional to 245,395.68, 368,098.17 and 76,912.28 is: 115,369.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,395.68 : 368,098.17 = 76,912.28 : x
  2. Step 2: Convert to fraction form
    245,395.68/368,098.17 = 76,912.28/x
  3. Step 3: Cross multiply
    245,395.68x = 368,098.17 × 76,912.28
  4. Step 4: Simplify right side
    245,395.68x = 28,311,271,273.17
  5. Step 5: Solve for x
    x = 28,311,271,273.17/245,395.68
  6. Step 6: Final answer
    x = 115,369.89

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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.