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Finding the Fourth Proportional to 226,660.40, 339,990.60 and 212,663.60

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Solution

The fourth proportional to 226,660.40, 339,990.60 and 212,663.60 is: 318,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,660.40 : 339,990.60 = 212,663.60 : x
  2. Step 2: Convert to fraction form
    226,660.40/339,990.60 = 212,663.60/x
  3. Step 3: Cross multiply
    226,660.40x = 339,990.60 × 212,663.60
  4. Step 4: Simplify right side
    226,660.40x = 72,303,624,962.16
  5. Step 5: Solve for x
    x = 72,303,624,962.16/226,660.40
  6. Step 6: Final answer
    x = 318,995.40

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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.