Home / 398,078.29-549,351.58-216,791.04

Finding the Fourth Proportional to 398,078.29, 549,351.58 and 216,791.04

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Solution

The fourth proportional to 398,078.29, 549,351.58 and 216,791.04 is: 299,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,078.29 : 549,351.58 = 216,791.04 : x
  2. Step 2: Convert to fraction form
    398,078.29/549,351.58 = 216,791.04/x
  3. Step 3: Cross multiply
    398,078.29x = 549,351.58 × 216,791.04
  4. Step 4: Simplify right side
    398,078.29x = 119,094,499,811.87
  5. Step 5: Solve for x
    x = 119,094,499,811.87/398,078.29
  6. Step 6: Final answer
    x = 299,173.56

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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.