Home / 397,678.66-548,788.41-216,394.18

Finding the Fourth Proportional to 397,678.66, 548,788.41 and 216,394.18

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Solution

The fourth proportional to 397,678.66, 548,788.41 and 216,394.18 is: 298,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,678.66 : 548,788.41 = 216,394.18 : x
  2. Step 2: Convert to fraction form
    397,678.66/548,788.41 = 216,394.18/x
  3. Step 3: Cross multiply
    397,678.66x = 548,788.41 × 216,394.18
  4. Step 4: Simplify right side
    397,678.66x = 118,754,617,975.45
  5. Step 5: Solve for x
    x = 118,754,617,975.45/397,678.66
  6. Step 6: Final answer
    x = 298,619.54

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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.