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Finding the Fourth Proportional to 397,707.38, 548,836.27 and 218,859.38

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Solution

The fourth proportional to 397,707.38, 548,836.27 and 218,859.38 is: 302,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,707.38 : 548,836.27 = 218,859.38 : x
  2. Step 2: Convert to fraction form
    397,707.38/548,836.27 = 218,859.38/x
  3. Step 3: Cross multiply
    397,707.38x = 548,836.27 × 218,859.38
  4. Step 4: Simplify right side
    397,707.38x = 120,117,962,482.38
  5. Step 5: Solve for x
    x = 120,117,962,482.38/397,707.38
  6. Step 6: Final answer
    x = 302,025.99

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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.