Home / 518,121.86-777,287.56-218,603.18

Finding the Fourth Proportional to 518,121.86, 777,287.56 and 218,603.18

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Solution

The fourth proportional to 518,121.86, 777,287.56 and 218,603.18 is: 327,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,121.86 : 777,287.56 = 218,603.18 : x
  2. Step 2: Convert to fraction form
    518,121.86/777,287.56 = 218,603.18/x
  3. Step 3: Cross multiply
    518,121.86x = 777,287.56 × 218,603.18
  4. Step 4: Simplify right side
    518,121.86x = 169,917,532,390.44
  5. Step 5: Solve for x
    x = 169,917,532,390.44/518,121.86
  6. Step 6: Final answer
    x = 327,948.97

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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.