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Finding the Fourth Proportional to 223,812.72, 308,843.28 and 123,210.72

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Solution

The fourth proportional to 223,812.72, 308,843.28 and 123,210.72 is: 170,020.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,812.72 : 308,843.28 = 123,210.72 : x
  2. Step 2: Convert to fraction form
    223,812.72/308,843.28 = 123,210.72/x
  3. Step 3: Cross multiply
    223,812.72x = 308,843.28 × 123,210.72
  4. Step 4: Simplify right side
    223,812.72x = 38,052,802,895.96
  5. Step 5: Solve for x
    x = 38,052,802,895.96/223,812.72
  6. Step 6: Final answer
    x = 170,020.73

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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.