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Finding the Fourth Proportional to 220,841.40, 331,262.10 and 154,356.60

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Solution

The fourth proportional to 220,841.40, 331,262.10 and 154,356.60 is: 231,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,841.40 : 331,262.10 = 154,356.60 : x
  2. Step 2: Convert to fraction form
    220,841.40/331,262.10 = 154,356.60/x
  3. Step 3: Cross multiply
    220,841.40x = 331,262.10 × 154,356.60
  4. Step 4: Simplify right side
    220,841.40x = 51,132,491,464.86
  5. Step 5: Solve for x
    x = 51,132,491,464.86/220,841.40
  6. Step 6: Final answer
    x = 231,534.90

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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.