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Finding the Fourth Proportional to 437,500.20, 656,396.10 and 213,000.60

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Solution

The fourth proportional to 437,500.20, 656,396.10 and 213,000.60 is: 319,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,500.20 : 656,396.10 = 213,000.60 : x
  2. Step 2: Convert to fraction form
    437,500.20/656,396.10 = 213,000.60/x
  3. Step 3: Cross multiply
    437,500.20x = 656,396.10 × 213,000.60
  4. Step 4: Simplify right side
    437,500.20x = 139,812,763,137.66
  5. Step 5: Solve for x
    x = 139,812,763,137.66/437,500.20
  6. Step 6: Final answer
    x = 319,571.88

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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.