Home / 305,631.28-421,760.24-169,671.20

Finding the Fourth Proportional to 305,631.28, 421,760.24 and 169,671.20

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Solution

The fourth proportional to 305,631.28, 421,760.24 and 169,671.20 is: 234,140.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,631.28 : 421,760.24 = 169,671.20 : x
  2. Step 2: Convert to fraction form
    305,631.28/421,760.24 = 169,671.20/x
  3. Step 3: Cross multiply
    305,631.28x = 421,760.24 × 169,671.20
  4. Step 4: Simplify right side
    305,631.28x = 71,560,566,033.09
  5. Step 5: Solve for x
    x = 71,560,566,033.09/305,631.28
  6. Step 6: Final answer
    x = 234,140.19

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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.