Home / 259,630.04-389,305.74-133,218.20

Finding the Fourth Proportional to 259,630.04, 389,305.74 and 133,218.20

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Solution

The fourth proportional to 259,630.04, 389,305.74 and 133,218.20 is: 199,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,630.04 : 389,305.74 = 133,218.20 : x
  2. Step 2: Convert to fraction form
    259,630.04/389,305.74 = 133,218.20/x
  3. Step 3: Cross multiply
    259,630.04x = 389,305.74 × 133,218.20
  4. Step 4: Simplify right side
    259,630.04x = 51,862,609,932.47
  5. Step 5: Solve for x
    x = 51,862,609,932.47/259,630.04
  6. Step 6: Final answer
    x = 199,755.81

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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.