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Finding the Fourth Proportional to 399,036.09, 598,443.39 and 110,781.51

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Solution

The fourth proportional to 399,036.09, 598,443.39 and 110,781.51 is: 166,141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,036.09 : 598,443.39 = 110,781.51 : x
  2. Step 2: Convert to fraction form
    399,036.09/598,443.39 = 110,781.51/x
  3. Step 3: Cross multiply
    399,036.09x = 598,443.39 × 110,781.51
  4. Step 4: Simplify right side
    399,036.09x = 66,296,462,393.72
  5. Step 5: Solve for x
    x = 66,296,462,393.72/399,036.09
  6. Step 6: Final answer
    x = 166,141.52

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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.