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Finding the Fourth Proportional to 275,220.90, 384,842.70 and 275,220.90

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Solution

The fourth proportional to 275,220.90, 384,842.70 and 275,220.90 is: 384,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,220.90 : 384,842.70 = 275,220.90 : x
  2. Step 2: Convert to fraction form
    275,220.90/384,842.70 = 275,220.90/x
  3. Step 3: Cross multiply
    275,220.90x = 384,842.70 × 275,220.90
  4. Step 4: Simplify right side
    275,220.90x = 105,916,754,252.43
  5. Step 5: Solve for x
    x = 105,916,754,252.43/275,220.90
  6. Step 6: Final answer
    x = 384,842.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.