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Finding the Fourth Proportional to 396,285.45, 594,473.28 and 143,684.90

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Solution

The fourth proportional to 396,285.45, 594,473.28 and 143,684.90 is: 215,543.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,285.45 : 594,473.28 = 143,684.90 : x
  2. Step 2: Convert to fraction form
    396,285.45/594,473.28 = 143,684.90/x
  3. Step 3: Cross multiply
    396,285.45x = 594,473.28 × 143,684.90
  4. Step 4: Simplify right side
    396,285.45x = 85,416,830,817.11
  5. Step 5: Solve for x
    x = 85,416,830,817.11/396,285.45
  6. Step 6: Final answer
    x = 215,543.70

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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.