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Finding the Fourth Proportional to 306,346.59, 422,725.91 and 170,358.66

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Solution

The fourth proportional to 306,346.59, 422,725.91 and 170,358.66 is: 235,076.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,346.59 : 422,725.91 = 170,358.66 : x
  2. Step 2: Convert to fraction form
    306,346.59/422,725.91 = 170,358.66/x
  3. Step 3: Cross multiply
    306,346.59x = 422,725.91 × 170,358.66
  4. Step 4: Simplify right side
    306,346.59x = 72,015,018,723.09
  5. Step 5: Solve for x
    x = 72,015,018,723.09/306,346.59
  6. Step 6: Final answer
    x = 235,076.94

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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.