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Finding the Fourth Proportional to 654,139.80, 981,015.30 and 254,550.60

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Solution

The fourth proportional to 654,139.80, 981,015.30 and 254,550.60 is: 381,750.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,139.80 : 981,015.30 = 254,550.60 : x
  2. Step 2: Convert to fraction form
    654,139.80/981,015.30 = 254,550.60/x
  3. Step 3: Cross multiply
    654,139.80x = 981,015.30 × 254,550.60
  4. Step 4: Simplify right side
    654,139.80x = 249,718,033,224.18
  5. Step 5: Solve for x
    x = 249,718,033,224.18/654,139.80
  6. Step 6: Final answer
    x = 381,750.25

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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.