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Finding the Fourth Proportional to 245,606.78, 368,410.17 and 87,825.67

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Solution

The fourth proportional to 245,606.78, 368,410.17 and 87,825.67 is: 131,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,606.78 : 368,410.17 = 87,825.67 : x
  2. Step 2: Convert to fraction form
    245,606.78/368,410.17 = 87,825.67/x
  3. Step 3: Cross multiply
    245,606.78x = 368,410.17 × 87,825.67
  4. Step 4: Simplify right side
    245,606.78x = 32,355,870,015.06
  5. Step 5: Solve for x
    x = 32,355,870,015.06/245,606.78
  6. Step 6: Final answer
    x = 131,738.51

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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.