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Finding the Fourth Proportional to 303,357, 418,645.62 and 169,221

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Solution

The fourth proportional to 303,357, 418,645.62 and 169,221 is: 233,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,357 : 418,645.62 = 169,221 : x
  2. Step 2: Convert to fraction form
    303,357/418,645.62 = 169,221/x
  3. Step 3: Cross multiply
    303,357x = 418,645.62 × 169,221
  4. Step 4: Simplify right side
    303,357x = 70,843,630,462.02
  5. Step 5: Solve for x
    x = 70,843,630,462.02/303,357
  6. Step 6: Final answer
    x = 233,532.21

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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.