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Finding the Fourth Proportional to 220,190.40, 308,966.40 and 220,190.40

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Solution

The fourth proportional to 220,190.40, 308,966.40 and 220,190.40 is: 308,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,190.40 : 308,966.40 = 220,190.40 : x
  2. Step 2: Convert to fraction form
    220,190.40/308,966.40 = 220,190.40/x
  3. Step 3: Cross multiply
    220,190.40x = 308,966.40 × 220,190.40
  4. Step 4: Simplify right side
    220,190.40x = 68,031,435,202.56
  5. Step 5: Solve for x
    x = 68,031,435,202.56/220,190.40
  6. Step 6: Final answer
    x = 308,966.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.