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Finding the Fourth Proportional to 320,761.76, 481,140.48 and 250,700

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Solution

The fourth proportional to 320,761.76, 481,140.48 and 250,700 is: 376,048.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,761.76 : 481,140.48 = 250,700 : x
  2. Step 2: Convert to fraction form
    320,761.76/481,140.48 = 250,700/x
  3. Step 3: Cross multiply
    320,761.76x = 481,140.48 × 250,700
  4. Step 4: Simplify right side
    320,761.76x = 120,621,918,336
  5. Step 5: Solve for x
    x = 120,621,918,336/320,761.76
  6. Step 6: Final answer
    x = 376,048.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.