Home / 259,945.80-389,627.10-133,537.20

Finding the Fourth Proportional to 259,945.80, 389,627.10 and 133,537.20

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Solution

The fourth proportional to 259,945.80, 389,627.10 and 133,537.20 is: 200,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,945.80 : 389,627.10 = 133,537.20 : x
  2. Step 2: Convert to fraction form
    259,945.80/389,627.10 = 133,537.20/x
  3. Step 3: Cross multiply
    259,945.80x = 389,627.10 × 133,537.20
  4. Step 4: Simplify right side
    259,945.80x = 52,029,711,978.12
  5. Step 5: Solve for x
    x = 52,029,711,978.12/259,945.80
  6. Step 6: Final answer
    x = 200,156.00

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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.