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Finding the Fourth Proportional to 201,358.65, 302,017.17 and 68,235.45

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Solution

The fourth proportional to 201,358.65, 302,017.17 and 68,235.45 is: 102,346.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,358.65 : 302,017.17 = 68,235.45 : x
  2. Step 2: Convert to fraction form
    201,358.65/302,017.17 = 68,235.45/x
  3. Step 3: Cross multiply
    201,358.65x = 302,017.17 × 68,235.45
  4. Step 4: Simplify right side
    201,358.65x = 20,608,277,502.68
  5. Step 5: Solve for x
    x = 20,608,277,502.68/201,358.65
  6. Step 6: Final answer
    x = 102,346.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.