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Finding the Fourth Proportional to 218,123.92, 301,019.70 and 122,630.32

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Solution

The fourth proportional to 218,123.92, 301,019.70 and 122,630.32 is: 169,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,123.92 : 301,019.70 = 122,630.32 : x
  2. Step 2: Convert to fraction form
    218,123.92/301,019.70 = 122,630.32/x
  3. Step 3: Cross multiply
    218,123.92x = 301,019.70 × 122,630.32
  4. Step 4: Simplify right side
    218,123.92x = 36,914,142,137.30
  5. Step 5: Solve for x
    x = 36,914,142,137.30/218,123.92
  6. Step 6: Final answer
    x = 169,234.73

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1.5x scale

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.