Home / 518,135.82-777,308.52-218,617.04

Finding the Fourth Proportional to 518,135.82, 777,308.52 and 218,617.04

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Solution

The fourth proportional to 518,135.82, 777,308.52 and 218,617.04 is: 327,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,135.82 : 777,308.52 = 218,617.04 : x
  2. Step 2: Convert to fraction form
    518,135.82/777,308.52 = 218,617.04/x
  3. Step 3: Cross multiply
    518,135.82x = 777,308.52 × 218,617.04
  4. Step 4: Simplify right side
    518,135.82x = 169,932,887,809.18
  5. Step 5: Solve for x
    x = 169,932,887,809.18/518,135.82
  6. Step 6: Final answer
    x = 327,969.77

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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.