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Finding the Fourth Proportional to 492,638.73, 738,953.63 and 155,679.43

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Solution

The fourth proportional to 492,638.73, 738,953.63 and 155,679.43 is: 233,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,638.73 : 738,953.63 = 155,679.43 : x
  2. Step 2: Convert to fraction form
    492,638.73/738,953.63 = 155,679.43/x
  3. Step 3: Cross multiply
    492,638.73x = 738,953.63 × 155,679.43
  4. Step 4: Simplify right side
    492,638.73x = 115,039,879,914.83
  5. Step 5: Solve for x
    x = 115,039,879,914.83/492,638.73
  6. Step 6: Final answer
    x = 233,517.73

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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.