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Finding the Fourth Proportional to 205,634.43, 308,376.08 and 70,660.22

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Solution

The fourth proportional to 205,634.43, 308,376.08 and 70,660.22 is: 105,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,634.43 : 308,376.08 = 70,660.22 : x
  2. Step 2: Convert to fraction form
    205,634.43/308,376.08 = 70,660.22/x
  3. Step 3: Cross multiply
    205,634.43x = 308,376.08 × 70,660.22
  4. Step 4: Simplify right side
    205,634.43x = 21,789,920,113.66
  5. Step 5: Solve for x
    x = 21,789,920,113.66/205,634.43
  6. Step 6: Final answer
    x = 105,964.36

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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.