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Finding the Fourth Proportional to 407,692.56, 611,479.44 and 108,191.28

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Solution

The fourth proportional to 407,692.56, 611,479.44 and 108,191.28 is: 162,271.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,692.56 : 611,479.44 = 108,191.28 : x
  2. Step 2: Convert to fraction form
    407,692.56/611,479.44 = 108,191.28/x
  3. Step 3: Cross multiply
    407,692.56x = 611,479.44 × 108,191.28
  4. Step 4: Simplify right side
    407,692.56x = 66,156,743,307.28
  5. Step 5: Solve for x
    x = 66,156,743,307.28/407,692.56
  6. Step 6: Final answer
    x = 162,271.16

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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.