Home / 259,743.40-389,534.10-102,020.20

Finding the Fourth Proportional to 259,743.40, 389,534.10 and 102,020.20

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Solution

The fourth proportional to 259,743.40, 389,534.10 and 102,020.20 is: 152,998.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.40 : 389,534.10 = 102,020.20 : x
  2. Step 2: Convert to fraction form
    259,743.40/389,534.10 = 102,020.20/x
  3. Step 3: Cross multiply
    259,743.40x = 389,534.10 × 102,020.20
  4. Step 4: Simplify right side
    259,743.40x = 39,740,346,788.82
  5. Step 5: Solve for x
    x = 39,740,346,788.82/259,743.40
  6. Step 6: Final answer
    x = 152,998.49

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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.