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Finding the Fourth Proportional to 261,644.94, 392,218.29 and 84,027.39

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Solution

The fourth proportional to 261,644.94, 392,218.29 and 84,027.39 is: 125,961.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,644.94 : 392,218.29 = 84,027.39 : x
  2. Step 2: Convert to fraction form
    261,644.94/392,218.29 = 84,027.39/x
  3. Step 3: Cross multiply
    261,644.94x = 392,218.29 × 84,027.39
  4. Step 4: Simplify right side
    261,644.94x = 32,957,079,218.96
  5. Step 5: Solve for x
    x = 32,957,079,218.96/261,644.94
  6. Step 6: Final answer
    x = 125,961.08

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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.