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Finding the Fourth Proportional to 311,634.40, 430,055.46 and 168,394.44

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Solution

The fourth proportional to 311,634.40, 430,055.46 and 168,394.44 is: 232,384.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,634.40 : 430,055.46 = 168,394.44 : x
  2. Step 2: Convert to fraction form
    311,634.40/430,055.46 = 168,394.44/x
  3. Step 3: Cross multiply
    311,634.40x = 430,055.46 × 168,394.44
  4. Step 4: Simplify right side
    311,634.40x = 72,418,945,363.39
  5. Step 5: Solve for x
    x = 72,418,945,363.39/311,634.40
  6. Step 6: Final answer
    x = 232,384.31

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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.