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Finding the Fourth Proportional to 518,138.33, 777,312.27 and 218,619.54

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Solution

The fourth proportional to 518,138.33, 777,312.27 and 218,619.54 is: 327,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,138.33 : 777,312.27 = 218,619.54 : x
  2. Step 2: Convert to fraction form
    518,138.33/777,312.27 = 218,619.54/x
  3. Step 3: Cross multiply
    518,138.33x = 777,312.27 × 218,619.54
  4. Step 4: Simplify right side
    518,138.33x = 169,935,650,903.76
  5. Step 5: Solve for x
    x = 169,935,650,903.76/518,138.33
  6. Step 6: Final answer
    x = 327,973.52

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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.