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Finding the Fourth Proportional to 305,262.46, 421,287.41 and 169,340.23

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Solution

The fourth proportional to 305,262.46, 421,287.41 and 169,340.23 is: 233,703.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,262.46 : 421,287.41 = 169,340.23 : x
  2. Step 2: Convert to fraction form
    305,262.46/421,287.41 = 169,340.23/x
  3. Step 3: Cross multiply
    305,262.46x = 421,287.41 × 169,340.23
  4. Step 4: Simplify right side
    305,262.46x = 71,340,907,855.46
  5. Step 5: Solve for x
    x = 71,340,907,855.46/305,262.46
  6. Step 6: Final answer
    x = 233,703.51

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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.