Home / 428,942.04-642,994.70-204,242.10

Finding the Fourth Proportional to 428,942.04, 642,994.70 and 204,242.10

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Solution

The fourth proportional to 428,942.04, 642,994.70 and 204,242.10 is: 306,163.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,942.04 : 642,994.70 = 204,242.10 : x
  2. Step 2: Convert to fraction form
    428,942.04/642,994.70 = 204,242.10/x
  3. Step 3: Cross multiply
    428,942.04x = 642,994.70 × 204,242.10
  4. Step 4: Simplify right side
    428,942.04x = 131,326,586,795.66
  5. Step 5: Solve for x
    x = 131,326,586,795.66/428,942.04
  6. Step 6: Final answer
    x = 306,163.94

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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.