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Finding the Fourth Proportional to 442,109.80, 663,164.70 and 403,402.60

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Solution

The fourth proportional to 442,109.80, 663,164.70 and 403,402.60 is: 605,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,109.80 : 663,164.70 = 403,402.60 : x
  2. Step 2: Convert to fraction form
    442,109.80/663,164.70 = 403,402.60/x
  3. Step 3: Cross multiply
    442,109.80x = 663,164.70 × 403,402.60
  4. Step 4: Simplify right side
    442,109.80x = 267,522,364,208.22
  5. Step 5: Solve for x
    x = 267,522,364,208.22/442,109.80
  6. Step 6: Final answer
    x = 605,103.90

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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.