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Finding the Fourth Proportional to 518,238.58, 777,772.60 and 268,991.86

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Solution

The fourth proportional to 518,238.58, 777,772.60 and 268,991.86 is: 403,703.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,238.58 : 777,772.60 = 268,991.86 : x
  2. Step 2: Convert to fraction form
    518,238.58/777,772.60 = 268,991.86/x
  3. Step 3: Cross multiply
    518,238.58x = 777,772.60 × 268,991.86
  4. Step 4: Simplify right side
    518,238.58x = 209,214,498,331.04
  5. Step 5: Solve for x
    x = 209,214,498,331.04/518,238.58
  6. Step 6: Final answer
    x = 403,703.06

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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.