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Finding the Fourth Proportional to 201,311.65, 302,005.58 and 66,383.47

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Solution

The fourth proportional to 201,311.65, 302,005.58 and 66,383.47 is: 99,587.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,311.65 : 302,005.58 = 66,383.47 : x
  2. Step 2: Convert to fraction form
    201,311.65/302,005.58 = 66,383.47/x
  3. Step 3: Cross multiply
    201,311.65x = 302,005.58 × 66,383.47
  4. Step 4: Simplify right side
    201,311.65x = 20,048,178,359.76
  5. Step 5: Solve for x
    x = 20,048,178,359.76/201,311.65
  6. Step 6: Final answer
    x = 99,587.77

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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.