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Finding the Fourth Proportional to 220,807.64, 331,216.90 and 80,566.24

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Solution

The fourth proportional to 220,807.64, 331,216.90 and 80,566.24 is: 120,851.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,807.64 : 331,216.90 = 80,566.24 : x
  2. Step 2: Convert to fraction form
    220,807.64/331,216.90 = 80,566.24/x
  3. Step 3: Cross multiply
    220,807.64x = 331,216.90 × 80,566.24
  4. Step 4: Simplify right side
    220,807.64x = 26,684,900,257.46
  5. Step 5: Solve for x
    x = 26,684,900,257.46/220,807.64
  6. Step 6: Final answer
    x = 120,851.34

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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.