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Finding the Fourth Proportional to 245,785.86, 368,662.32 and 68,288.94

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Solution

The fourth proportional to 245,785.86, 368,662.32 and 68,288.94 is: 102,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,785.86 : 368,662.32 = 68,288.94 : x
  2. Step 2: Convert to fraction form
    245,785.86/368,662.32 = 68,288.94/x
  3. Step 3: Cross multiply
    245,785.86x = 368,662.32 × 68,288.94
  4. Step 4: Simplify right side
    245,785.86x = 25,175,559,050.74
  5. Step 5: Solve for x
    x = 25,175,559,050.74/245,785.86
  6. Step 6: Final answer
    x = 102,428.83

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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.