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Finding the Fourth Proportional to 245,878.68, 368,745.12 and 105,604.50

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Solution

The fourth proportional to 245,878.68, 368,745.12 and 105,604.50 is: 158,375.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,878.68 : 368,745.12 = 105,604.50 : x
  2. Step 2: Convert to fraction form
    245,878.68/368,745.12 = 105,604.50/x
  3. Step 3: Cross multiply
    245,878.68x = 368,745.12 × 105,604.50
  4. Step 4: Simplify right side
    245,878.68x = 38,941,144,025.04
  5. Step 5: Solve for x
    x = 38,941,144,025.04/245,878.68
  6. Step 6: Final answer
    x = 158,375.44

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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.