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Finding the Fourth Proportional to 550,919.71, 760,345.87 and 305,959.51

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Solution

The fourth proportional to 550,919.71, 760,345.87 and 305,959.51 is: 422,266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,919.71 : 760,345.87 = 305,959.51 : x
  2. Step 2: Convert to fraction form
    550,919.71/760,345.87 = 305,959.51/x
  3. Step 3: Cross multiply
    550,919.71x = 760,345.87 × 305,959.51
  4. Step 4: Simplify right side
    550,919.71x = 232,635,046,013.99
  5. Step 5: Solve for x
    x = 232,635,046,013.99/550,919.71
  6. Step 6: Final answer
    x = 422,266.70

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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.