Home / 372,128.40-558,322.20-161,917.20

Finding the Fourth Proportional to 372,128.40, 558,322.20 and 161,917.20

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Solution

The fourth proportional to 372,128.40, 558,322.20 and 161,917.20 is: 242,932.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,128.40 : 558,322.20 = 161,917.20 : x
  2. Step 2: Convert to fraction form
    372,128.40/558,322.20 = 161,917.20/x
  3. Step 3: Cross multiply
    372,128.40x = 558,322.20 × 161,917.20
  4. Step 4: Simplify right side
    372,128.40x = 90,401,967,321.84
  5. Step 5: Solve for x
    x = 90,401,967,321.84/372,128.40
  6. Step 6: Final answer
    x = 242,932.19

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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.