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Finding the Fourth Proportional to 372,112.89, 558,172.79 and 119,393.91

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Solution

The fourth proportional to 372,112.89, 558,172.79 and 119,393.91 is: 179,091.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,112.89 : 558,172.79 = 119,393.91 : x
  2. Step 2: Convert to fraction form
    372,112.89/558,172.79 = 119,393.91/x
  3. Step 3: Cross multiply
    372,112.89x = 558,172.79 × 119,393.91
  4. Step 4: Simplify right side
    372,112.89x = 66,642,431,256.74
  5. Step 5: Solve for x
    x = 66,642,431,256.74/372,112.89
  6. Step 6: Final answer
    x = 179,091.97

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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.