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Finding the Fourth Proportional to 220,553.80, 330,830.70 and 210,185.80

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Solution

The fourth proportional to 220,553.80, 330,830.70 and 210,185.80 is: 315,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,553.80 : 330,830.70 = 210,185.80 : x
  2. Step 2: Convert to fraction form
    220,553.80/330,830.70 = 210,185.80/x
  3. Step 3: Cross multiply
    220,553.80x = 330,830.70 × 210,185.80
  4. Step 4: Simplify right side
    220,553.80x = 69,535,915,344.06
  5. Step 5: Solve for x
    x = 69,535,915,344.06/220,553.80
  6. Step 6: Final answer
    x = 315,278.70

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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.