Home / 428,924.06-642,967.70-204,224.12

Finding the Fourth Proportional to 428,924.06, 642,967.70 and 204,224.12

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Solution

The fourth proportional to 428,924.06, 642,967.70 and 204,224.12 is: 306,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,924.06 : 642,967.70 = 204,224.12 : x
  2. Step 2: Convert to fraction form
    428,924.06/642,967.70 = 204,224.12/x
  3. Step 3: Cross multiply
    428,924.06x = 642,967.70 × 204,224.12
  4. Step 4: Simplify right side
    428,924.06x = 131,309,508,484.97
  5. Step 5: Solve for x
    x = 131,309,508,484.97/428,924.06
  6. Step 6: Final answer
    x = 306,136.97

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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.