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Finding the Fourth Proportional to 220,900.20, 331,523.10 and 102,586.20

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Solution

The fourth proportional to 220,900.20, 331,523.10 and 102,586.20 is: 153,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,900.20 : 331,523.10 = 102,586.20 : x
  2. Step 2: Convert to fraction form
    220,900.20/331,523.10 = 102,586.20/x
  3. Step 3: Cross multiply
    220,900.20x = 331,523.10 × 102,586.20
  4. Step 4: Simplify right side
    220,900.20x = 34,009,695,041.22
  5. Step 5: Solve for x
    x = 34,009,695,041.22/220,900.20
  6. Step 6: Final answer
    x = 153,959.55

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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.