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Finding the Fourth Proportional to 306,341.97, 422,689.43 and 178,992.93

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Solution

The fourth proportional to 306,341.97, 422,689.43 and 178,992.93 is: 246,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,341.97 : 422,689.43 = 178,992.93 : x
  2. Step 2: Convert to fraction form
    306,341.97/422,689.43 = 178,992.93/x
  3. Step 3: Cross multiply
    306,341.97x = 422,689.43 × 178,992.93
  4. Step 4: Simplify right side
    306,341.97x = 75,658,418,660.77
  5. Step 5: Solve for x
    x = 75,658,418,660.77/306,341.97
  6. Step 6: Final answer
    x = 246,973.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.