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Finding the Fourth Proportional to 379,363.31, 522,913.31 and 256,817.04

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Solution

The fourth proportional to 379,363.31, 522,913.31 and 256,817.04 is: 353,995.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,363.31 : 522,913.31 = 256,817.04 : x
  2. Step 2: Convert to fraction form
    379,363.31/522,913.31 = 256,817.04/x
  3. Step 3: Cross multiply
    379,363.31x = 522,913.31 × 256,817.04
  4. Step 4: Simplify right side
    379,363.31x = 134,293,047,166.72
  5. Step 5: Solve for x
    x = 134,293,047,166.72/379,363.31
  6. Step 6: Final answer
    x = 353,995.88

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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.