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Finding the Fourth Proportional to 492,843.09, 739,355.76 and 155,968.54

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Solution

The fourth proportional to 492,843.09, 739,355.76 and 155,968.54 is: 233,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,843.09 : 739,355.76 = 155,968.54 : x
  2. Step 2: Convert to fraction form
    492,843.09/739,355.76 = 155,968.54/x
  3. Step 3: Cross multiply
    492,843.09x = 739,355.76 × 155,968.54
  4. Step 4: Simplify right side
    492,843.09x = 115,316,238,427.79
  5. Step 5: Solve for x
    x = 115,316,238,427.79/492,843.09
  6. Step 6: Final answer
    x = 233,981.65

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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.