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Finding the Fourth Proportional to 550,908.71, 760,255.60 and 305,894.00

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Solution

The fourth proportional to 550,908.71, 760,255.60 and 305,894.00 is: 422,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,908.71 : 760,255.60 = 305,894.00 : x
  2. Step 2: Convert to fraction form
    550,908.71/760,255.60 = 305,894.00/x
  3. Step 3: Cross multiply
    550,908.71x = 760,255.60 × 305,894.00
  4. Step 4: Simplify right side
    550,908.71x = 232,557,623,939.42
  5. Step 5: Solve for x
    x = 232,557,623,939.42/550,908.71
  6. Step 6: Final answer
    x = 422,134.59

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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.