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Finding the Fourth Proportional to 292,622.89, 438,934.38 and 82,260.88

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Solution

The fourth proportional to 292,622.89, 438,934.38 and 82,260.88 is: 123,391.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,622.89 : 438,934.38 = 82,260.88 : x
  2. Step 2: Convert to fraction form
    292,622.89/438,934.38 = 82,260.88/x
  3. Step 3: Cross multiply
    292,622.89x = 438,934.38 × 82,260.88
  4. Step 4: Simplify right side
    292,622.89x = 36,107,128,361.05
  5. Step 5: Solve for x
    x = 36,107,128,361.05/292,622.89
  6. Step 6: Final answer
    x = 123,391.33

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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.