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Finding the Fourth Proportional to 292,491.09, 438,763.41 and 82,127.61

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Solution

The fourth proportional to 292,491.09, 438,763.41 and 82,127.61 is: 123,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,491.09 : 438,763.41 = 82,127.61 : x
  2. Step 2: Convert to fraction form
    292,491.09/438,763.41 = 82,127.61/x
  3. Step 3: Cross multiply
    292,491.09x = 438,763.41 × 82,127.61
  4. Step 4: Simplify right side
    292,491.09x = 36,034,590,218.75
  5. Step 5: Solve for x
    x = 36,034,590,218.75/292,491.09
  6. Step 6: Final answer
    x = 123,198.93

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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.