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Finding the Fourth Proportional to 342,912.12, 473,202.26 and 189,939.98

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Solution

The fourth proportional to 342,912.12, 473,202.26 and 189,939.98 is: 262,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,912.12 : 473,202.26 = 189,939.98 : x
  2. Step 2: Convert to fraction form
    342,912.12/473,202.26 = 189,939.98/x
  3. Step 3: Cross multiply
    342,912.12x = 473,202.26 × 189,939.98
  4. Step 4: Simplify right side
    342,912.12x = 89,880,027,800.35
  5. Step 5: Solve for x
    x = 89,880,027,800.35/342,912.12
  6. Step 6: Final answer
    x = 262,108.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.