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Finding the Fourth Proportional to 397,707.88, 548,836.96 and 218,859.88

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Solution

The fourth proportional to 397,707.88, 548,836.96 and 218,859.88 is: 302,026.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,707.88 : 548,836.96 = 218,859.88 : x
  2. Step 2: Convert to fraction form
    397,707.88/548,836.96 = 218,859.88/x
  3. Step 3: Cross multiply
    397,707.88x = 548,836.96 × 218,859.88
  4. Step 4: Simplify right side
    397,707.88x = 120,118,388,460.98
  5. Step 5: Solve for x
    x = 120,118,388,460.98/397,707.88
  6. Step 6: Final answer
    x = 302,026.68

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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.