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Finding the Fourth Proportional to 274,081.40, 411,065.60 and 105,543.88

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Solution

The fourth proportional to 274,081.40, 411,065.60 and 105,543.88 is: 158,294.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,081.40 : 411,065.60 = 105,543.88 : x
  2. Step 2: Convert to fraction form
    274,081.40/411,065.60 = 105,543.88/x
  3. Step 3: Cross multiply
    274,081.40x = 411,065.60 × 105,543.88
  4. Step 4: Simplify right side
    274,081.40x = 43,385,458,358.53
  5. Step 5: Solve for x
    x = 43,385,458,358.53/274,081.40
  6. Step 6: Final answer
    x = 158,294.06

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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.