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Finding the Fourth Proportional to 201,311.90, 302,005.95 and 66,383.72

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Solution

The fourth proportional to 201,311.90, 302,005.95 and 66,383.72 is: 99,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,311.90 : 302,005.95 = 66,383.72 : x
  2. Step 2: Convert to fraction form
    201,311.90/302,005.95 = 66,383.72/x
  3. Step 3: Cross multiply
    201,311.90x = 302,005.95 × 66,383.72
  4. Step 4: Simplify right side
    201,311.90x = 20,048,278,423.13
  5. Step 5: Solve for x
    x = 20,048,278,423.13/201,311.90
  6. Step 6: Final answer
    x = 99,588.14

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1.5x scale

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.