Home / 428,664.08-642,996.12-148,028.24

Finding the Fourth Proportional to 428,664.08, 642,996.12 and 148,028.24

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Solution

The fourth proportional to 428,664.08, 642,996.12 and 148,028.24 is: 222,042.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,664.08 : 642,996.12 = 148,028.24 : x
  2. Step 2: Convert to fraction form
    428,664.08/642,996.12 = 148,028.24/x
  3. Step 3: Cross multiply
    428,664.08x = 642,996.12 × 148,028.24
  4. Step 4: Simplify right side
    428,664.08x = 95,181,583,970.43
  5. Step 5: Solve for x
    x = 95,181,583,970.43/428,664.08
  6. Step 6: Final answer
    x = 222,042.36

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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.