Home / 259,938.22-389,020.22-217,865.80

Finding the Fourth Proportional to 259,938.22, 389,020.22 and 217,865.80

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Solution

The fourth proportional to 259,938.22, 389,020.22 and 217,865.80 is: 326,055.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,938.22 : 389,020.22 = 217,865.80 : x
  2. Step 2: Convert to fraction form
    259,938.22/389,020.22 = 217,865.80/x
  3. Step 3: Cross multiply
    259,938.22x = 389,020.22 × 217,865.80
  4. Step 4: Simplify right side
    259,938.22x = 84,754,201,446.48
  5. Step 5: Solve for x
    x = 84,754,201,446.48/259,938.22
  6. Step 6: Final answer
    x = 326,055.17

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1.5x scale

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.