Home / 398,721.02-550,248.24-217,442.84

Finding the Fourth Proportional to 398,721.02, 550,248.24 and 217,442.84

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Solution

The fourth proportional to 398,721.02, 550,248.24 and 217,442.84 is: 300,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,721.02 : 550,248.24 = 217,442.84 : x
  2. Step 2: Convert to fraction form
    398,721.02/550,248.24 = 217,442.84/x
  3. Step 3: Cross multiply
    398,721.02x = 550,248.24 × 217,442.84
  4. Step 4: Simplify right side
    398,721.02x = 119,647,540,010.60
  5. Step 5: Solve for x
    x = 119,647,540,010.60/398,721.02
  6. Step 6: Final answer
    x = 300,078.34

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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.