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Finding the Fourth Proportional to 305,598.94, 421,705.40 and 169,622.18

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Solution

The fourth proportional to 305,598.94, 421,705.40 and 169,622.18 is: 234,066.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,598.94 : 421,705.40 = 169,622.18 : x
  2. Step 2: Convert to fraction form
    305,598.94/421,705.40 = 169,622.18/x
  3. Step 3: Cross multiply
    305,598.94x = 421,705.40 × 169,622.18
  4. Step 4: Simplify right side
    305,598.94x = 71,530,589,265.77
  5. Step 5: Solve for x
    x = 71,530,589,265.77/305,598.94
  6. Step 6: Final answer
    x = 234,066.88

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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.