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Finding the Fourth Proportional to 518,129.33, 777,298.77 and 218,610.54

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Solution

The fourth proportional to 518,129.33, 777,298.77 and 218,610.54 is: 327,960.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,129.33 : 777,298.77 = 218,610.54 : x
  2. Step 2: Convert to fraction form
    518,129.33/777,298.77 = 218,610.54/x
  3. Step 3: Cross multiply
    518,129.33x = 777,298.77 × 218,610.54
  4. Step 4: Simplify right side
    518,129.33x = 169,925,703,851.04
  5. Step 5: Solve for x
    x = 169,925,703,851.04/518,129.33
  6. Step 6: Final answer
    x = 327,960.02

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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.