Home / 259,810.20-389,618.10-91,265.40

Finding the Fourth Proportional to 259,810.20, 389,618.10 and 91,265.40

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Solution

The fourth proportional to 259,810.20, 389,618.10 and 91,265.40 is: 136,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,810.20 : 389,618.10 = 91,265.40 : x
  2. Step 2: Convert to fraction form
    259,810.20/389,618.10 = 91,265.40/x
  3. Step 3: Cross multiply
    259,810.20x = 389,618.10 × 91,265.40
  4. Step 4: Simplify right side
    259,810.20x = 35,558,651,743.74
  5. Step 5: Solve for x
    x = 35,558,651,743.74/259,810.20
  6. Step 6: Final answer
    x = 136,863.96

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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.