Home / 259,767.40-389,622.30-212,938.60

Finding the Fourth Proportional to 259,767.40, 389,622.30 and 212,938.60

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Solution

The fourth proportional to 259,767.40, 389,622.30 and 212,938.60 is: 319,384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,767.40 : 389,622.30 = 212,938.60 : x
  2. Step 2: Convert to fraction form
    259,767.40/389,622.30 = 212,938.60/x
  3. Step 3: Cross multiply
    259,767.40x = 389,622.30 × 212,938.60
  4. Step 4: Simplify right side
    259,767.40x = 82,965,627,090.78
  5. Step 5: Solve for x
    x = 82,965,627,090.78/259,767.40
  6. Step 6: Final answer
    x = 319,384.29

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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.