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Finding the Fourth Proportional to 305,185.59, 421,151.76 and 169,219.80

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Solution

The fourth proportional to 305,185.59, 421,151.76 and 169,219.80 is: 233,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,185.59 : 421,151.76 = 169,219.80 : x
  2. Step 2: Convert to fraction form
    305,185.59/421,151.76 = 169,219.80/x
  3. Step 3: Cross multiply
    305,185.59x = 421,151.76 × 169,219.80
  4. Step 4: Simplify right side
    305,185.59x = 71,267,216,596.85
  5. Step 5: Solve for x
    x = 71,267,216,596.85/305,185.59
  6. Step 6: Final answer
    x = 233,520.91

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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.