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Finding the Fourth Proportional to 427,272.93, 640,908.59 and 161,093.16

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Solution

The fourth proportional to 427,272.93, 640,908.59 and 161,093.16 is: 241,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,272.93 : 640,908.59 = 161,093.16 : x
  2. Step 2: Convert to fraction form
    427,272.93/640,908.59 = 161,093.16/x
  3. Step 3: Cross multiply
    427,272.93x = 640,908.59 × 161,093.16
  4. Step 4: Simplify right side
    427,272.93x = 103,245,989,228.78
  5. Step 5: Solve for x
    x = 103,245,989,228.78/427,272.93
  6. Step 6: Final answer
    x = 241,639.43

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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.