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Finding the Fourth Proportional to 372,091.40, 558,266.70 and 161,880.20

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Solution

The fourth proportional to 372,091.40, 558,266.70 and 161,880.20 is: 242,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,091.40 : 558,266.70 = 161,880.20 : x
  2. Step 2: Convert to fraction form
    372,091.40/558,266.70 = 161,880.20/x
  3. Step 3: Cross multiply
    372,091.40x = 558,266.70 × 161,880.20
  4. Step 4: Simplify right side
    372,091.40x = 90,372,325,049.34
  5. Step 5: Solve for x
    x = 90,372,325,049.34/372,091.40
  6. Step 6: Final answer
    x = 242,876.68

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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.