Home / 283,971.40-391,881.79-154,912.77

Finding the Fourth Proportional to 283,971.40, 391,881.79 and 154,912.77

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Solution

The fourth proportional to 283,971.40, 391,881.79 and 154,912.77 is: 213,780.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,971.40 : 391,881.79 = 154,912.77 : x
  2. Step 2: Convert to fraction form
    283,971.40/391,881.79 = 154,912.77/x
  3. Step 3: Cross multiply
    283,971.40x = 391,881.79 × 154,912.77
  4. Step 4: Simplify right side
    283,971.40x = 60,707,492,530.68
  5. Step 5: Solve for x
    x = 60,707,492,530.68/283,971.40
  6. Step 6: Final answer
    x = 213,780.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.