Home / 306,487.72-422,942.34-170,517.16

Finding the Fourth Proportional to 306,487.72, 422,942.34 and 170,517.16

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Solution

The fourth proportional to 306,487.72, 422,942.34 and 170,517.16 is: 235,307.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,487.72 : 422,942.34 = 170,517.16 : x
  2. Step 2: Convert to fraction form
    306,487.72/422,942.34 = 170,517.16/x
  3. Step 3: Cross multiply
    306,487.72x = 422,942.34 × 170,517.16
  4. Step 4: Simplify right side
    306,487.72x = 72,118,926,660.55
  5. Step 5: Solve for x
    x = 72,118,926,660.55/306,487.72
  6. Step 6: Final answer
    x = 235,307.72

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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.