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Finding the Fourth Proportional to 394,872.77, 592,308.70 and 128,632.86

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Solution

The fourth proportional to 394,872.77, 592,308.70 and 128,632.86 is: 192,949.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,872.77 : 592,308.70 = 128,632.86 : x
  2. Step 2: Convert to fraction form
    394,872.77/592,308.70 = 128,632.86/x
  3. Step 3: Cross multiply
    394,872.77x = 592,308.70 × 128,632.86
  4. Step 4: Simplify right side
    394,872.77x = 76,190,362,083.88
  5. Step 5: Solve for x
    x = 76,190,362,083.88/394,872.77
  6. Step 6: Final answer
    x = 192,949.14

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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.