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Finding the Fourth Proportional to 371,708.78, 557,584.29 and 105,448.41

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Solution

The fourth proportional to 371,708.78, 557,584.29 and 105,448.41 is: 158,178.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,708.78 : 557,584.29 = 105,448.41 : x
  2. Step 2: Convert to fraction form
    371,708.78/557,584.29 = 105,448.41/x
  3. Step 3: Cross multiply
    371,708.78x = 557,584.29 × 105,448.41
  4. Step 4: Simplify right side
    371,708.78x = 58,796,376,821.48
  5. Step 5: Solve for x
    x = 58,796,376,821.48/371,708.78
  6. Step 6: Final answer
    x = 158,178.61

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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.