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Finding the Fourth Proportional to 205,404.80, 308,107.20 and 163,932.80

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Solution

The fourth proportional to 205,404.80, 308,107.20 and 163,932.80 is: 245,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,404.80 : 308,107.20 = 163,932.80 : x
  2. Step 2: Convert to fraction form
    205,404.80/308,107.20 = 163,932.80/x
  3. Step 3: Cross multiply
    205,404.80x = 308,107.20 × 163,932.80
  4. Step 4: Simplify right side
    205,404.80x = 50,508,875,996.16
  5. Step 5: Solve for x
    x = 50,508,875,996.16/205,404.80
  6. Step 6: Final answer
    x = 245,899.20

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1.5x scale

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.