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Finding the Fourth Proportional to 394,950.22, 592,486.84 and 128,648.82

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Solution

The fourth proportional to 394,950.22, 592,486.84 and 128,648.82 is: 192,993.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,950.22 : 592,486.84 = 128,648.82 : x
  2. Step 2: Convert to fraction form
    394,950.22/592,486.84 = 128,648.82/x
  3. Step 3: Cross multiply
    394,950.22x = 592,486.84 × 128,648.82
  4. Step 4: Simplify right side
    394,950.22x = 76,222,732,831.53
  5. Step 5: Solve for x
    x = 76,222,732,831.53/394,950.22
  6. Step 6: Final answer
    x = 192,993.27

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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.