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Finding the Fourth Proportional to 275,495.10, 380,188.88 and 154,645.13

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Solution

The fourth proportional to 275,495.10, 380,188.88 and 154,645.13 is: 213,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,495.10 : 380,188.88 = 154,645.13 : x
  2. Step 2: Convert to fraction form
    275,495.10/380,188.88 = 154,645.13/x
  3. Step 3: Cross multiply
    275,495.10x = 380,188.88 × 154,645.13
  4. Step 4: Simplify right side
    275,495.10x = 58,794,356,097.98
  5. Step 5: Solve for x
    x = 58,794,356,097.98/275,495.10
  6. Step 6: Final answer
    x = 213,413.44

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1.5x scale

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.