Home / 259,602.45-389,403.68-109,803.89

Finding the Fourth Proportional to 259,602.45, 389,403.68 and 109,803.89

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Solution

The fourth proportional to 259,602.45, 389,403.68 and 109,803.89 is: 164,705.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,602.45 : 389,403.68 = 109,803.89 : x
  2. Step 2: Convert to fraction form
    259,602.45/389,403.68 = 109,803.89/x
  3. Step 3: Cross multiply
    259,602.45x = 389,403.68 × 109,803.89
  4. Step 4: Simplify right side
    259,602.45x = 42,758,036,348.28
  5. Step 5: Solve for x
    x = 42,758,036,348.28/259,602.45
  6. Step 6: Final answer
    x = 164,705.83

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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.