Home / 394,949.96-592,466.65-128,731.31

Finding the Fourth Proportional to 394,949.96, 592,466.65 and 128,731.31

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Solution

The fourth proportional to 394,949.96, 592,466.65 and 128,731.31 is: 193,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,949.96 : 592,466.65 = 128,731.31 : x
  2. Step 2: Convert to fraction form
    394,949.96/592,466.65 = 128,731.31/x
  3. Step 3: Cross multiply
    394,949.96x = 592,466.65 × 128,731.31
  4. Step 4: Simplify right side
    394,949.96x = 76,269,007,647.51
  5. Step 5: Solve for x
    x = 76,269,007,647.51/394,949.96
  6. Step 6: Final answer
    x = 193,110.56

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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.