Home / 428,943.04-642,996.19-204,243.10

Finding the Fourth Proportional to 428,943.04, 642,996.19 and 204,243.10

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Solution

The fourth proportional to 428,943.04, 642,996.19 and 204,243.10 is: 306,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,943.04 : 642,996.19 = 204,243.10 : x
  2. Step 2: Convert to fraction form
    428,943.04/642,996.19 = 204,243.10/x
  3. Step 3: Cross multiply
    428,943.04x = 642,996.19 × 204,243.10
  4. Step 4: Simplify right side
    428,943.04x = 131,327,535,133.79
  5. Step 5: Solve for x
    x = 131,327,535,133.79/428,943.04
  6. Step 6: Final answer
    x = 306,165.44

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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.