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Finding the Fourth Proportional to 245,790.40, 368,685.60 and 220,858.60

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Solution

The fourth proportional to 245,790.40, 368,685.60 and 220,858.60 is: 331,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,790.40 : 368,685.60 = 220,858.60 : x
  2. Step 2: Convert to fraction form
    245,790.40/368,685.60 = 220,858.60/x
  3. Step 3: Cross multiply
    245,790.40x = 368,685.60 × 220,858.60
  4. Step 4: Simplify right side
    245,790.40x = 81,427,385,456.16
  5. Step 5: Solve for x
    x = 81,427,385,456.16/245,790.40
  6. Step 6: Final answer
    x = 331,287.90

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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.