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Finding the Fourth Proportional to 397,118.82, 548,027.61 and 215,831.22

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Solution

The fourth proportional to 397,118.82, 548,027.61 and 215,831.22 is: 297,849.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,118.82 : 548,027.61 = 215,831.22 : x
  2. Step 2: Convert to fraction form
    397,118.82/548,027.61 = 215,831.22/x
  3. Step 3: Cross multiply
    397,118.82x = 548,027.61 × 215,831.22
  4. Step 4: Simplify right side
    397,118.82x = 118,281,467,659.98
  5. Step 5: Solve for x
    x = 118,281,467,659.98/397,118.82
  6. Step 6: Final answer
    x = 297,849.06

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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.