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Finding the Fourth Proportional to 302,692.80, 454,082.40 and 102,979.20

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Solution

The fourth proportional to 302,692.80, 454,082.40 and 102,979.20 is: 154,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,692.80 : 454,082.40 = 102,979.20 : x
  2. Step 2: Convert to fraction form
    302,692.80/454,082.40 = 102,979.20/x
  3. Step 3: Cross multiply
    302,692.80x = 454,082.40 × 102,979.20
  4. Step 4: Simplify right side
    302,692.80x = 46,761,042,286.08
  5. Step 5: Solve for x
    x = 46,761,042,286.08/302,692.80
  6. Step 6: Final answer
    x = 154,483.50

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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.