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Finding the Fourth Proportional to 305,552.84, 421,656.57 and 169,578.81

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Solution

The fourth proportional to 305,552.84, 421,656.57 and 169,578.81 is: 234,015.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,552.84 : 421,656.57 = 169,578.81 : x
  2. Step 2: Convert to fraction form
    305,552.84/421,656.57 = 169,578.81/x
  3. Step 3: Cross multiply
    305,552.84x = 421,656.57 × 169,578.81
  4. Step 4: Simplify right side
    305,552.84x = 71,504,019,369.28
  5. Step 5: Solve for x
    x = 71,504,019,369.28/305,552.84
  6. Step 6: Final answer
    x = 234,015.24

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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.