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Finding the Fourth Proportional to 311,426.17, 429,768.09 and 168,186.19

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Solution

The fourth proportional to 311,426.17, 429,768.09 and 168,186.19 is: 232,096.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,426.17 : 429,768.09 = 168,186.19 : x
  2. Step 2: Convert to fraction form
    311,426.17/429,768.09 = 168,186.19/x
  3. Step 3: Cross multiply
    311,426.17x = 429,768.09 × 168,186.19
  4. Step 4: Simplify right side
    311,426.17x = 72,281,057,640.68
  5. Step 5: Solve for x
    x = 72,281,057,640.68/311,426.17
  6. Step 6: Final answer
    x = 232,096.93

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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.