Home / 397,130.88-548,761.32-289,513.20

Finding the Fourth Proportional to 397,130.88, 548,761.32 and 289,513.20

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Solution

The fourth proportional to 397,130.88, 548,761.32 and 289,513.20 is: 400,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,130.88 : 548,761.32 = 289,513.20 : x
  2. Step 2: Convert to fraction form
    397,130.88/548,761.32 = 289,513.20/x
  3. Step 3: Cross multiply
    397,130.88x = 548,761.32 × 289,513.20
  4. Step 4: Simplify right side
    397,130.88x = 158,873,645,789.42
  5. Step 5: Solve for x
    x = 158,873,645,789.42/397,130.88
  6. Step 6: Final answer
    x = 400,053.62

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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.