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Finding the Fourth Proportional to 389,842.32, 537,982.32 and 220,076.44

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Solution

The fourth proportional to 389,842.32, 537,982.32 and 220,076.44 is: 303,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,842.32 : 537,982.32 = 220,076.44 : x
  2. Step 2: Convert to fraction form
    389,842.32/537,982.32 = 220,076.44/x
  3. Step 3: Cross multiply
    389,842.32x = 537,982.32 × 220,076.44
  4. Step 4: Simplify right side
    389,842.32x = 118,397,233,768.54
  5. Step 5: Solve for x
    x = 118,397,233,768.54/389,842.32
  6. Step 6: Final answer
    x = 303,705.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.