Home / 283,723.25-391,540.77-156,403.40

Finding the Fourth Proportional to 283,723.25, 391,540.77 and 156,403.40

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Solution

The fourth proportional to 283,723.25, 391,540.77 and 156,403.40 is: 215,838.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,723.25 : 391,540.77 = 156,403.40 : x
  2. Step 2: Convert to fraction form
    283,723.25/391,540.77 = 156,403.40/x
  3. Step 3: Cross multiply
    283,723.25x = 391,540.77 × 156,403.40
  4. Step 4: Simplify right side
    283,723.25x = 61,238,305,708.91
  5. Step 5: Solve for x
    x = 61,238,305,708.91/283,723.25
  6. Step 6: Final answer
    x = 215,838.17

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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.