Home / 398,512.38-549,939.98-217,225.86

Finding the Fourth Proportional to 398,512.38, 549,939.98 and 217,225.86

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Solution

The fourth proportional to 398,512.38, 549,939.98 and 217,225.86 is: 299,767.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512.38 : 549,939.98 = 217,225.86 : x
  2. Step 2: Convert to fraction form
    398,512.38/549,939.98 = 217,225.86/x
  3. Step 3: Cross multiply
    398,512.38x = 549,939.98 × 217,225.86
  4. Step 4: Simplify right side
    398,512.38x = 119,461,185,103.88
  5. Step 5: Solve for x
    x = 119,461,185,103.88/398,512.38
  6. Step 6: Final answer
    x = 299,767.81

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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.