Home / 428,230.08-641,863.92-203,406.48

Finding the Fourth Proportional to 428,230.08, 641,863.92 and 203,406.48

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Solution

The fourth proportional to 428,230.08, 641,863.92 and 203,406.48 is: 304,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,230.08 : 641,863.92 = 203,406.48 : x
  2. Step 2: Convert to fraction form
    428,230.08/641,863.92 = 203,406.48/x
  3. Step 3: Cross multiply
    428,230.08x = 641,863.92 × 203,406.48
  4. Step 4: Simplify right side
    428,230.08x = 130,559,280,606.20
  5. Step 5: Solve for x
    x = 130,559,280,606.20/428,230.08
  6. Step 6: Final answer
    x = 304,881.15

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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.