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Finding the Fourth Proportional to 311,425.17, 429,766.71 and 168,185.19

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Solution

The fourth proportional to 311,425.17, 429,766.71 and 168,185.19 is: 232,095.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,425.17 : 429,766.71 = 168,185.19 : x
  2. Step 2: Convert to fraction form
    311,425.17/429,766.71 = 168,185.19/x
  3. Step 3: Cross multiply
    311,425.17x = 429,766.71 × 168,185.19
  4. Step 4: Simplify right side
    311,425.17x = 72,280,397,704.00
  5. Step 5: Solve for x
    x = 72,280,397,704.00/311,425.17
  6. Step 6: Final answer
    x = 232,095.55

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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.