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Finding the Fourth Proportional to 492,286.70, 738,429.84 and 118,309.70

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Solution

The fourth proportional to 492,286.70, 738,429.84 and 118,309.70 is: 177,464.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,286.70 : 738,429.84 = 118,309.70 : x
  2. Step 2: Convert to fraction form
    492,286.70/738,429.84 = 118,309.70/x
  3. Step 3: Cross multiply
    492,286.70x = 738,429.84 × 118,309.70
  4. Step 4: Simplify right side
    492,286.70x = 87,363,412,841.45
  5. Step 5: Solve for x
    x = 87,363,412,841.45/492,286.70
  6. Step 6: Final answer
    x = 177,464.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.