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Finding the Fourth Proportional to 205,051.80, 307,626.30 and 105,227.40

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Solution

The fourth proportional to 205,051.80, 307,626.30 and 105,227.40 is: 157,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,051.80 : 307,626.30 = 105,227.40 : x
  2. Step 2: Convert to fraction form
    205,051.80/307,626.30 = 105,227.40/x
  3. Step 3: Cross multiply
    205,051.80x = 307,626.30 × 105,227.40
  4. Step 4: Simplify right side
    205,051.80x = 32,370,715,720.62
  5. Step 5: Solve for x
    x = 32,370,715,720.62/205,051.80
  6. Step 6: Final answer
    x = 157,866.04

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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.