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Finding the Fourth Proportional to 217,422.20, 303,769 and 217,422.20

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Solution

The fourth proportional to 217,422.20, 303,769 and 217,422.20 is: 303,769

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,422.20 : 303,769 = 217,422.20 : x
  2. Step 2: Convert to fraction form
    217,422.20/303,769 = 217,422.20/x
  3. Step 3: Cross multiply
    217,422.20x = 303,769 × 217,422.20
  4. Step 4: Simplify right side
    217,422.20x = 66,046,124,271.80
  5. Step 5: Solve for x
    x = 66,046,124,271.80/217,422.20
  6. Step 6: Final answer
    x = 303,769

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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.