Home / 428,943.54-642,996.95-204,243.60

Finding the Fourth Proportional to 428,943.54, 642,996.95 and 204,243.60

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Solution

The fourth proportional to 428,943.54, 642,996.95 and 204,243.60 is: 306,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,943.54 : 642,996.95 = 204,243.60 : x
  2. Step 2: Convert to fraction form
    428,943.54/642,996.95 = 204,243.60/x
  3. Step 3: Cross multiply
    428,943.54x = 642,996.95 × 204,243.60
  4. Step 4: Simplify right side
    428,943.54x = 131,328,010,835.80
  5. Step 5: Solve for x
    x = 131,328,010,835.80/428,943.54
  6. Step 6: Final answer
    x = 306,166.19

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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.