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Finding the Fourth Proportional to 302,993.28, 418,132.80 and 168,865.92

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Solution

The fourth proportional to 302,993.28, 418,132.80 and 168,865.92 is: 233,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,993.28 : 418,132.80 = 168,865.92 : x
  2. Step 2: Convert to fraction form
    302,993.28/418,132.80 = 168,865.92/x
  3. Step 3: Cross multiply
    302,993.28x = 418,132.80 × 168,865.92
  4. Step 4: Simplify right side
    302,993.28x = 70,608,379,954.18
  5. Step 5: Solve for x
    x = 70,608,379,954.18/302,993.28
  6. Step 6: Final answer
    x = 233,036.13

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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.