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Finding the Fourth Proportional to 492,305, 738,528.78 and 155,231.24

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Solution

The fourth proportional to 492,305, 738,528.78 and 155,231.24 is: 232,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,305 : 738,528.78 = 155,231.24 : x
  2. Step 2: Convert to fraction form
    492,305/738,528.78 = 155,231.24/x
  3. Step 3: Cross multiply
    492,305x = 738,528.78 × 155,231.24
  4. Step 4: Simplify right side
    492,305x = 114,642,738,295.09
  5. Step 5: Solve for x
    x = 114,642,738,295.09/492,305
  6. Step 6: Final answer
    x = 232,869.34

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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.