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Finding the Fourth Proportional to 245,765.22, 368,791.12 and 103,601.78

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Solution

The fourth proportional to 245,765.22, 368,791.12 and 103,601.78 is: 155,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,765.22 : 368,791.12 = 103,601.78 : x
  2. Step 2: Convert to fraction form
    245,765.22/368,791.12 = 103,601.78/x
  3. Step 3: Cross multiply
    245,765.22x = 368,791.12 × 103,601.78
  4. Step 4: Simplify right side
    245,765.22x = 38,207,416,480.19
  5. Step 5: Solve for x
    x = 38,207,416,480.19/245,765.22
  6. Step 6: Final answer
    x = 155,463.07

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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.