Home / 397,518.29-548,578.13-216,231.78

Finding the Fourth Proportional to 397,518.29, 548,578.13 and 216,231.78

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Solution

The fourth proportional to 397,518.29, 548,578.13 and 216,231.78 is: 298,401.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,518.29 : 548,578.13 = 216,231.78 : x
  2. Step 2: Convert to fraction form
    397,518.29/548,578.13 = 216,231.78/x
  3. Step 3: Cross multiply
    397,518.29x = 548,578.13 × 216,231.78
  4. Step 4: Simplify right side
    397,518.29x = 118,620,024,437.81
  5. Step 5: Solve for x
    x = 118,620,024,437.81/397,518.29
  6. Step 6: Final answer
    x = 298,401.43

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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.