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Finding the Fourth Proportional to 442,108.80, 663,163.20 and 403,401.60

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Solution

The fourth proportional to 442,108.80, 663,163.20 and 403,401.60 is: 605,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,108.80 : 663,163.20 = 403,401.60 : x
  2. Step 2: Convert to fraction form
    442,108.80/663,163.20 = 403,401.60/x
  3. Step 3: Cross multiply
    442,108.80x = 663,163.20 × 403,401.60
  4. Step 4: Simplify right side
    442,108.80x = 267,521,095,941.12
  5. Step 5: Solve for x
    x = 267,521,095,941.12/442,108.80
  6. Step 6: Final answer
    x = 605,102.40

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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.