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Finding the Fourth Proportional to 217,800.88, 300,666.24 and 145,324.24

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Solution

The fourth proportional to 217,800.88, 300,666.24 and 145,324.24 is: 200,614.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,800.88 : 300,666.24 = 145,324.24 : x
  2. Step 2: Convert to fraction form
    217,800.88/300,666.24 = 145,324.24/x
  3. Step 3: Cross multiply
    217,800.88x = 300,666.24 × 145,324.24
  4. Step 4: Simplify right side
    217,800.88x = 43,694,092,821.66
  5. Step 5: Solve for x
    x = 43,694,092,821.66/217,800.88
  6. Step 6: Final answer
    x = 200,614.86

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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.