Home / 215,131.70-322,587.38-126,411.86

Finding the Fourth Proportional to 215,131.70, 322,587.38 and 126,411.86

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Solution

The fourth proportional to 215,131.70, 322,587.38 and 126,411.86 is: 189,553.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,131.70 : 322,587.38 = 126,411.86 : x
  2. Step 2: Convert to fraction form
    215,131.70/322,587.38 = 126,411.86/x
  3. Step 3: Cross multiply
    215,131.70x = 322,587.38 × 126,411.86
  4. Step 4: Simplify right side
    215,131.70x = 40,778,871,840.82
  5. Step 5: Solve for x
    x = 40,778,871,840.82/215,131.70
  6. Step 6: Final answer
    x = 189,553.06

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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.