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Finding the Fourth Proportional to 205,107.40, 307,488.30 and 106,611.40

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Solution

The fourth proportional to 205,107.40, 307,488.30 and 106,611.40 is: 159,827.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,107.40 : 307,488.30 = 106,611.40 : x
  2. Step 2: Convert to fraction form
    205,107.40/307,488.30 = 106,611.40/x
  3. Step 3: Cross multiply
    205,107.40x = 307,488.30 × 106,611.40
  4. Step 4: Simplify right side
    205,107.40x = 32,781,758,146.62
  5. Step 5: Solve for x
    x = 32,781,758,146.62/205,107.40
  6. Step 6: Final answer
    x = 159,827.28

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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.