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Finding the Fourth Proportional to 305,215.16, 421,200.58 and 169,250.88

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Solution

The fourth proportional to 305,215.16, 421,200.58 and 169,250.88 is: 233,568.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,215.16 : 421,200.58 = 169,250.88 : x
  2. Step 2: Convert to fraction form
    305,215.16/421,200.58 = 169,250.88/x
  3. Step 3: Cross multiply
    305,215.16x = 421,200.58 × 169,250.88
  4. Step 4: Simplify right side
    305,215.16x = 71,288,568,821.51
  5. Step 5: Solve for x
    x = 71,288,568,821.51/305,215.16
  6. Step 6: Final answer
    x = 233,568.24

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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.