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Finding the Fourth Proportional to 371,686.32, 557,550.54 and 105,425.75

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Solution

The fourth proportional to 371,686.32, 557,550.54 and 105,425.75 is: 158,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,686.32 : 557,550.54 = 105,425.75 : x
  2. Step 2: Convert to fraction form
    371,686.32/557,550.54 = 105,425.75/x
  3. Step 3: Cross multiply
    371,686.32x = 557,550.54 × 105,425.75
  4. Step 4: Simplify right side
    371,686.32x = 58,780,185,236.28
  5. Step 5: Solve for x
    x = 58,780,185,236.28/371,686.32
  6. Step 6: Final answer
    x = 158,144.60

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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.