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Finding the Fourth Proportional to 518,125.31, 777,292.75 and 218,606.54

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Solution

The fourth proportional to 518,125.31, 777,292.75 and 218,606.54 is: 327,954.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,125.31 : 777,292.75 = 218,606.54 : x
  2. Step 2: Convert to fraction form
    518,125.31/777,292.75 = 218,606.54/x
  3. Step 3: Cross multiply
    518,125.31x = 777,292.75 × 218,606.54
  4. Step 4: Simplify right side
    518,125.31x = 169,921,278,644.59
  5. Step 5: Solve for x
    x = 169,921,278,644.59/518,125.31
  6. Step 6: Final answer
    x = 327,954.02

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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.