Home / 398,076.35-549,309.21-236,905.39

Finding the Fourth Proportional to 398,076.35, 549,309.21 and 236,905.39

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Solution

The fourth proportional to 398,076.35, 549,309.21 and 236,905.39 is: 326,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,076.35 : 549,309.21 = 236,905.39 : x
  2. Step 2: Convert to fraction form
    398,076.35/549,309.21 = 236,905.39/x
  3. Step 3: Cross multiply
    398,076.35x = 549,309.21 × 236,905.39
  4. Step 4: Simplify right side
    398,076.35x = 130,134,309,879.10
  5. Step 5: Solve for x
    x = 130,134,309,879.10/398,076.35
  6. Step 6: Final answer
    x = 326,907.92

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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.