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Finding the Fourth Proportional to 201,431.80, 302,082.99 and 66,465.64

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Solution

The fourth proportional to 201,431.80, 302,082.99 and 66,465.64 is: 99,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,431.80 : 302,082.99 = 66,465.64 : x
  2. Step 2: Convert to fraction form
    201,431.80/302,082.99 = 66,465.64/x
  3. Step 3: Cross multiply
    201,431.80x = 302,082.99 × 66,465.64
  4. Step 4: Simplify right side
    201,431.80x = 20,078,139,263.46
  5. Step 5: Solve for x
    x = 20,078,139,263.46/201,431.80
  6. Step 6: Final answer
    x = 99,677.11

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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.