Home / 421,928.03-582,343.68-319,775.31

Finding the Fourth Proportional to 421,928.03, 582,343.68 and 319,775.31

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Solution

The fourth proportional to 421,928.03, 582,343.68 and 319,775.31 is: 441,352.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,928.03 : 582,343.68 = 319,775.31 : x
  2. Step 2: Convert to fraction form
    421,928.03/582,343.68 = 319,775.31/x
  3. Step 3: Cross multiply
    421,928.03x = 582,343.68 × 319,775.31
  4. Step 4: Simplify right side
    421,928.03x = 186,219,130,198.96
  5. Step 5: Solve for x
    x = 186,219,130,198.96/421,928.03
  6. Step 6: Final answer
    x = 441,352.83

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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.