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Finding the Fourth Proportional to 386,661.22, 579,852.33 and 133,873.18

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Solution

The fourth proportional to 386,661.22, 579,852.33 and 133,873.18 is: 200,761.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,661.22 : 579,852.33 = 133,873.18 : x
  2. Step 2: Convert to fraction form
    386,661.22/579,852.33 = 133,873.18/x
  3. Step 3: Cross multiply
    386,661.22x = 579,852.33 × 133,873.18
  4. Step 4: Simplify right side
    386,661.22x = 77,626,675,347.51
  5. Step 5: Solve for x
    x = 77,626,675,347.51/386,661.22
  6. Step 6: Final answer
    x = 200,761.47

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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.