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Finding the Fourth Proportional to 220,219.83, 303,918.08 and 123,424.83

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Solution

The fourth proportional to 220,219.83, 303,918.08 and 123,424.83 is: 170,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,219.83 : 303,918.08 = 123,424.83 : x
  2. Step 2: Convert to fraction form
    220,219.83/303,918.08 = 123,424.83/x
  3. Step 3: Cross multiply
    220,219.83x = 303,918.08 × 123,424.83
  4. Step 4: Simplify right side
    220,219.83x = 37,511,036,740.80
  5. Step 5: Solve for x
    x = 37,511,036,740.80/220,219.83
  6. Step 6: Final answer
    x = 170,334.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.