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Finding the Fourth Proportional to 303,356.05, 418,630.85 and 167,389.89

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Solution

The fourth proportional to 303,356.05, 418,630.85 and 167,389.89 is: 230,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,356.05 : 418,630.85 = 167,389.89 : x
  2. Step 2: Convert to fraction form
    303,356.05/418,630.85 = 167,389.89/x
  3. Step 3: Cross multiply
    303,356.05x = 418,630.85 × 167,389.89
  4. Step 4: Simplify right side
    303,356.05x = 70,074,573,449.37
  5. Step 5: Solve for x
    x = 70,074,573,449.37/303,356.05
  6. Step 6: Final answer
    x = 230,997.78

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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.