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Finding the Fourth Proportional to 205,265.80, 307,380.30 and 134,763.40

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Solution

The fourth proportional to 205,265.80, 307,380.30 and 134,763.40 is: 201,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,265.80 : 307,380.30 = 134,763.40 : x
  2. Step 2: Convert to fraction form
    205,265.80/307,380.30 = 134,763.40/x
  3. Step 3: Cross multiply
    205,265.80x = 307,380.30 × 134,763.40
  4. Step 4: Simplify right side
    205,265.80x = 41,423,614,321.02
  5. Step 5: Solve for x
    x = 41,423,614,321.02/205,265.80
  6. Step 6: Final answer
    x = 201,804.75

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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.