Home / 398,289.07-549,633.86-217,008.55

Finding the Fourth Proportional to 398,289.07, 549,633.86 and 217,008.55

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Solution

The fourth proportional to 398,289.07, 549,633.86 and 217,008.55 is: 299,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,289.07 : 549,633.86 = 217,008.55 : x
  2. Step 2: Convert to fraction form
    398,289.07/549,633.86 = 217,008.55/x
  3. Step 3: Cross multiply
    398,289.07x = 549,633.86 × 217,008.55
  4. Step 4: Simplify right side
    398,289.07x = 119,275,244,241.33
  5. Step 5: Solve for x
    x = 119,275,244,241.33/398,289.07
  6. Step 6: Final answer
    x = 299,469.04

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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.