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Finding the Fourth Proportional to 315,621, 435,569.94 and 181,485

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Solution

The fourth proportional to 315,621, 435,569.94 and 181,485 is: 250,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,621 : 435,569.94 = 181,485 : x
  2. Step 2: Convert to fraction form
    315,621/435,569.94 = 181,485/x
  3. Step 3: Cross multiply
    315,621x = 435,569.94 × 181,485
  4. Step 4: Simplify right side
    315,621x = 79,049,410,560.90
  5. Step 5: Solve for x
    x = 79,049,410,560.90/315,621
  6. Step 6: Final answer
    x = 250,456.75

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Why These Related Problems?

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