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Finding the Fourth Proportional to 245,606.78, 368,410.18 and 87,825.66

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Solution

The fourth proportional to 245,606.78, 368,410.18 and 87,825.66 is: 131,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,606.78 : 368,410.18 = 87,825.66 : x
  2. Step 2: Convert to fraction form
    245,606.78/368,410.18 = 87,825.66/x
  3. Step 3: Cross multiply
    245,606.78x = 368,410.18 × 87,825.66
  4. Step 4: Simplify right side
    245,606.78x = 32,355,867,209.22
  5. Step 5: Solve for x
    x = 32,355,867,209.22/245,606.78
  6. Step 6: Final answer
    x = 131,738.49

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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.