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Finding the Fourth Proportional to 205,360.40, 308,040.60 and 112,048.40

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Solution

The fourth proportional to 205,360.40, 308,040.60 and 112,048.40 is: 168,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,360.40 : 308,040.60 = 112,048.40 : x
  2. Step 2: Convert to fraction form
    205,360.40/308,040.60 = 112,048.40/x
  3. Step 3: Cross multiply
    205,360.40x = 308,040.60 × 112,048.40
  4. Step 4: Simplify right side
    205,360.40x = 34,515,456,365.04
  5. Step 5: Solve for x
    x = 34,515,456,365.04/205,360.40
  6. Step 6: Final answer
    x = 168,072.60

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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.