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Finding the Fourth Proportional to 245,791.40, 368,687.10 and 220,859.60

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Solution

The fourth proportional to 245,791.40, 368,687.10 and 220,859.60 is: 331,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,791.40 : 368,687.10 = 220,859.60 : x
  2. Step 2: Convert to fraction form
    245,791.40/368,687.10 = 220,859.60/x
  3. Step 3: Cross multiply
    245,791.40x = 368,687.10 × 220,859.60
  4. Step 4: Simplify right side
    245,791.40x = 81,428,085,431.16
  5. Step 5: Solve for x
    x = 81,428,085,431.16/245,791.40
  6. Step 6: Final answer
    x = 331,289.40

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1.5x scale

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.