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Finding the Fourth Proportional to 305,247.42, 421,234.89 and 176,175.77

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Solution

The fourth proportional to 305,247.42, 421,234.89 and 176,175.77 is: 243,118.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,247.42 : 421,234.89 = 176,175.77 : x
  2. Step 2: Convert to fraction form
    305,247.42/421,234.89 = 176,175.77/x
  3. Step 3: Cross multiply
    305,247.42x = 421,234.89 × 176,175.77
  4. Step 4: Simplify right side
    305,247.42x = 74,211,381,096.62
  5. Step 5: Solve for x
    x = 74,211,381,096.62/305,247.42
  6. Step 6: Final answer
    x = 243,118.78

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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.