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Finding the Fourth Proportional to 397,179.60, 548,111.12 and 215,891.48

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Solution

The fourth proportional to 397,179.60, 548,111.12 and 215,891.48 is: 297,932.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,179.60 : 548,111.12 = 215,891.48 : x
  2. Step 2: Convert to fraction form
    397,179.60/548,111.12 = 215,891.48/x
  3. Step 3: Cross multiply
    397,179.60x = 548,111.12 × 215,891.48
  4. Step 4: Simplify right side
    397,179.60x = 118,332,520,901.26
  5. Step 5: Solve for x
    x = 118,332,520,901.26/397,179.60
  6. Step 6: Final answer
    x = 297,932.02

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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.