Home / 259,723.40-389,504.10-102,000.20

Finding the Fourth Proportional to 259,723.40, 389,504.10 and 102,000.20

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Solution

The fourth proportional to 259,723.40, 389,504.10 and 102,000.20 is: 152,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,723.40 : 389,504.10 = 102,000.20 : x
  2. Step 2: Convert to fraction form
    259,723.40/389,504.10 = 102,000.20/x
  3. Step 3: Cross multiply
    259,723.40x = 389,504.10 × 102,000.20
  4. Step 4: Simplify right side
    259,723.40x = 39,729,496,100.82
  5. Step 5: Solve for x
    x = 39,729,496,100.82/259,723.40
  6. Step 6: Final answer
    x = 152,968.49

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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.