Home / 320,821.80-481,232.70-292,828.20

Finding the Fourth Proportional to 320,821.80, 481,232.70 and 292,828.20

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Solution

The fourth proportional to 320,821.80, 481,232.70 and 292,828.20 is: 439,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,821.80 : 481,232.70 = 292,828.20 : x
  2. Step 2: Convert to fraction form
    320,821.80/481,232.70 = 292,828.20/x
  3. Step 3: Cross multiply
    320,821.80x = 481,232.70 × 292,828.20
  4. Step 4: Simplify right side
    320,821.80x = 140,918,505,322.14
  5. Step 5: Solve for x
    x = 140,918,505,322.14/320,821.80
  6. Step 6: Final answer
    x = 439,242.30

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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.