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Finding the Fourth Proportional to 311,425.23, 429,766.80 and 168,185.26

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Solution

The fourth proportional to 311,425.23, 429,766.80 and 168,185.26 is: 232,095.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,425.23 : 429,766.80 = 168,185.26 : x
  2. Step 2: Convert to fraction form
    311,425.23/429,766.80 = 168,185.26/x
  3. Step 3: Cross multiply
    311,425.23x = 429,766.80 × 168,185.26
  4. Step 4: Simplify right side
    311,425.23x = 72,280,440,997.37
  5. Step 5: Solve for x
    x = 72,280,440,997.37/311,425.23
  6. Step 6: Final answer
    x = 232,095.65

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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.