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Finding the Fourth Proportional to 305,333.46, 421,348.77 and 171,188.82

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Solution

The fourth proportional to 305,333.46, 421,348.77 and 171,188.82 is: 236,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,333.46 : 421,348.77 = 171,188.82 : x
  2. Step 2: Convert to fraction form
    305,333.46/421,348.77 = 171,188.82/x
  3. Step 3: Cross multiply
    305,333.46x = 421,348.77 × 171,188.82
  4. Step 4: Simplify right side
    305,333.46x = 72,130,198,744.75
  5. Step 5: Solve for x
    x = 72,130,198,744.75/305,333.46
  6. Step 6: Final answer
    x = 236,234.18

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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.