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Finding the Fourth Proportional to 550,908.99, 760,292.06 and 305,906.40

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Solution

The fourth proportional to 550,908.99, 760,292.06 and 305,906.40 is: 422,171.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,908.99 : 760,292.06 = 305,906.40 : x
  2. Step 2: Convert to fraction form
    550,908.99/760,292.06 = 305,906.40/x
  3. Step 3: Cross multiply
    550,908.99x = 760,292.06 × 305,906.40
  4. Step 4: Simplify right side
    550,908.99x = 232,578,207,023.18
  5. Step 5: Solve for x
    x = 232,578,207,023.18/550,908.99
  6. Step 6: Final answer
    x = 422,171.74

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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.