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Finding the Fourth Proportional to 305,593.43, 421,673.94 and 169,628.40

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Solution

The fourth proportional to 305,593.43, 421,673.94 and 169,628.40 is: 234,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,593.43 : 421,673.94 = 169,628.40 : x
  2. Step 2: Convert to fraction form
    305,593.43/421,673.94 = 169,628.40/x
  3. Step 3: Cross multiply
    305,593.43x = 421,673.94 × 169,628.40
  4. Step 4: Simplify right side
    305,593.43x = 71,527,875,763.90
  5. Step 5: Solve for x
    x = 71,527,875,763.90/305,593.43
  6. Step 6: Final answer
    x = 234,062.22

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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.