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Finding the Fourth Proportional to 371,675.40, 557,534.25 and 105,414.86

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Solution

The fourth proportional to 371,675.40, 557,534.25 and 105,414.86 is: 158,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,675.40 : 557,534.25 = 105,414.86 : x
  2. Step 2: Convert to fraction form
    371,675.40/557,534.25 = 105,414.86/x
  3. Step 3: Cross multiply
    371,675.40x = 557,534.25 × 105,414.86
  4. Step 4: Simplify right side
    371,675.40x = 58,772,392,121.28
  5. Step 5: Solve for x
    x = 58,772,392,121.28/371,675.40
  6. Step 6: Final answer
    x = 158,128.28

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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.