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Finding the Fourth Proportional to 275,896.94, 380,744.54 and 155,030.98

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Solution

The fourth proportional to 275,896.94, 380,744.54 and 155,030.98 is: 213,946.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,896.94 : 380,744.54 = 155,030.98 : x
  2. Step 2: Convert to fraction form
    275,896.94/380,744.54 = 155,030.98/x
  3. Step 3: Cross multiply
    275,896.94x = 380,744.54 × 155,030.98
  4. Step 4: Simplify right side
    275,896.94x = 59,027,199,165.85
  5. Step 5: Solve for x
    x = 59,027,199,165.85/275,896.94
  6. Step 6: Final answer
    x = 213,946.55

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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.