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Finding the Fourth Proportional to 496,167.80, 743,430.90 and 285,438.20

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Solution

The fourth proportional to 496,167.80, 743,430.90 and 285,438.20 is: 427,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,167.80 : 743,430.90 = 285,438.20 : x
  2. Step 2: Convert to fraction form
    496,167.80/743,430.90 = 285,438.20/x
  3. Step 3: Cross multiply
    496,167.80x = 743,430.90 × 285,438.20
  4. Step 4: Simplify right side
    496,167.80x = 212,203,577,920.38
  5. Step 5: Solve for x
    x = 212,203,577,920.38/496,167.80
  6. Step 6: Final answer
    x = 427,685.11

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1.5x scale

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.