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Finding the Fourth Proportional to 275,840.95, 380,659.94 and 154,985.35

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Solution

The fourth proportional to 275,840.95, 380,659.94 and 154,985.35 is: 213,879.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,840.95 : 380,659.94 = 154,985.35 : x
  2. Step 2: Convert to fraction form
    275,840.95/380,659.94 = 154,985.35/x
  3. Step 3: Cross multiply
    275,840.95x = 380,659.94 × 154,985.35
  4. Step 4: Simplify right side
    275,840.95x = 58,996,713,256.95
  5. Step 5: Solve for x
    x = 58,996,713,256.95/275,840.95
  6. Step 6: Final answer
    x = 213,879.46

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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.