Home / 259,939.80-389,618.10-133,531.20

Finding the Fourth Proportional to 259,939.80, 389,618.10 and 133,531.20

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Solution

The fourth proportional to 259,939.80, 389,618.10 and 133,531.20 is: 200,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,939.80 : 389,618.10 = 133,531.20 : x
  2. Step 2: Convert to fraction form
    259,939.80/389,618.10 = 133,531.20/x
  3. Step 3: Cross multiply
    259,939.80x = 389,618.10 × 133,531.20
  4. Step 4: Simplify right side
    259,939.80x = 52,026,172,434.72
  5. Step 5: Solve for x
    x = 52,026,172,434.72/259,939.80
  6. Step 6: Final answer
    x = 200,147.00

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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.