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Finding the Fourth Proportional to 143,243.28, 214,864.92 and 54,476.28

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Solution

The fourth proportional to 143,243.28, 214,864.92 and 54,476.28 is: 81,714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,243.28 : 214,864.92 = 54,476.28 : x
  2. Step 2: Convert to fraction form
    143,243.28/214,864.92 = 54,476.28/x
  3. Step 3: Cross multiply
    143,243.28x = 214,864.92 × 54,476.28
  4. Step 4: Simplify right side
    143,243.28x = 11,705,041,544.10
  5. Step 5: Solve for x
    x = 11,705,041,544.10/143,243.28
  6. Step 6: Final answer
    x = 81,714.42

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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.