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Finding the Fourth Proportional to 259,676.60, 389,617.30 and 101,878.20

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Solution

The fourth proportional to 259,676.60, 389,617.30 and 101,878.20 is: 152,857.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,676.60 : 389,617.30 = 101,878.20 : x
  2. Step 2: Convert to fraction form
    259,676.60/389,617.30 = 101,878.20/x
  3. Step 3: Cross multiply
    259,676.60x = 389,617.30 × 101,878.20
  4. Step 4: Simplify right side
    259,676.60x = 39,693,509,212.86
  5. Step 5: Solve for x
    x = 39,693,509,212.86/259,676.60
  6. Step 6: Final answer
    x = 152,857.47

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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.