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Finding the Fourth Proportional to 463,940.92, 640,208.14 and 272,917.40

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Solution

The fourth proportional to 463,940.92, 640,208.14 and 272,917.40 is: 376,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,940.92 : 640,208.14 = 272,917.40 : x
  2. Step 2: Convert to fraction form
    463,940.92/640,208.14 = 272,917.40/x
  3. Step 3: Cross multiply
    463,940.92x = 640,208.14 × 272,917.40
  4. Step 4: Simplify right side
    463,940.92x = 174,723,941,027.64
  5. Step 5: Solve for x
    x = 174,723,941,027.64/463,940.92
  6. Step 6: Final answer
    x = 376,608.17

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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.