Home / 398,721.01-550,248.27-217,442.83

Finding the Fourth Proportional to 398,721.01, 550,248.27 and 217,442.83

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Solution

The fourth proportional to 398,721.01, 550,248.27 and 217,442.83 is: 300,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,721.01 : 550,248.27 = 217,442.83 : x
  2. Step 2: Convert to fraction form
    398,721.01/550,248.27 = 217,442.83/x
  3. Step 3: Cross multiply
    398,721.01x = 550,248.27 × 217,442.83
  4. Step 4: Simplify right side
    398,721.01x = 119,647,541,031.40
  5. Step 5: Solve for x
    x = 119,647,541,031.40/398,721.01
  6. Step 6: Final answer
    x = 300,078.35

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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.