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Finding the Fourth Proportional to 315,309.46, 434,387.73 and 219,643.06

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Solution

The fourth proportional to 315,309.46, 434,387.73 and 219,643.06 is: 302,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,309.46 : 434,387.73 = 219,643.06 : x
  2. Step 2: Convert to fraction form
    315,309.46/434,387.73 = 219,643.06/x
  3. Step 3: Cross multiply
    315,309.46x = 434,387.73 × 219,643.06
  4. Step 4: Simplify right side
    315,309.46x = 95,410,250,243.65
  5. Step 5: Solve for x
    x = 95,410,250,243.65/315,309.46
  6. Step 6: Final answer
    x = 302,592.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.