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Finding the Fourth Proportional to 654,212.70, 981,027.45 and 254,720.70

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Solution

The fourth proportional to 654,212.70, 981,027.45 and 254,720.70 is: 381,967.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,212.70 : 981,027.45 = 254,720.70 : x
  2. Step 2: Convert to fraction form
    654,212.70/981,027.45 = 254,720.70/x
  3. Step 3: Cross multiply
    654,212.70x = 981,027.45 × 254,720.70
  4. Step 4: Simplify right side
    654,212.70x = 249,887,998,783.22
  5. Step 5: Solve for x
    x = 249,887,998,783.22/654,212.70
  6. Step 6: Final answer
    x = 381,967.51

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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.