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Finding the Fourth Proportional to 209,481.12, 314,270.88 and 69,239.73

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Solution

The fourth proportional to 209,481.12, 314,270.88 and 69,239.73 is: 103,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,481.12 : 314,270.88 = 69,239.73 : x
  2. Step 2: Convert to fraction form
    209,481.12/314,270.88 = 69,239.73/x
  3. Step 3: Cross multiply
    209,481.12x = 314,270.88 × 69,239.73
  4. Step 4: Simplify right side
    209,481.12x = 21,760,030,878.06
  5. Step 5: Solve for x
    x = 21,760,030,878.06/209,481.12
  6. Step 6: Final answer
    x = 103,875.86

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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.