Home / 305,589.12-421,705.08-169,616.04

Finding the Fourth Proportional to 305,589.12, 421,705.08 and 169,616.04

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Solution

The fourth proportional to 305,589.12, 421,705.08 and 169,616.04 is: 234,065.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,589.12 : 421,705.08 = 169,616.04 : x
  2. Step 2: Convert to fraction form
    305,589.12/421,705.08 = 169,616.04/x
  3. Step 3: Cross multiply
    305,589.12x = 421,705.08 × 169,616.04
  4. Step 4: Simplify right side
    305,589.12x = 71,527,945,717.48
  5. Step 5: Solve for x
    x = 71,527,945,717.48/305,589.12
  6. Step 6: Final answer
    x = 234,065.75

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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.