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Finding the Fourth Proportional to 518,016.44, 777,130.14 and 218,498.15

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Solution

The fourth proportional to 518,016.44, 777,130.14 and 218,498.15 is: 327,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,016.44 : 777,130.14 = 218,498.15 : x
  2. Step 2: Convert to fraction form
    518,016.44/777,130.14 = 218,498.15/x
  3. Step 3: Cross multiply
    518,016.44x = 777,130.14 × 218,498.15
  4. Step 4: Simplify right side
    518,016.44x = 169,801,494,013.59
  5. Step 5: Solve for x
    x = 169,801,494,013.59/518,016.44
  6. Step 6: Final answer
    x = 327,791.71

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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.