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Finding the Fourth Proportional to 398,807.08, 550,340.34 and 237,578.64

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Solution

The fourth proportional to 398,807.08, 550,340.34 and 237,578.64 is: 327,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,807.08 : 550,340.34 = 237,578.64 : x
  2. Step 2: Convert to fraction form
    398,807.08/550,340.34 = 237,578.64/x
  3. Step 3: Cross multiply
    398,807.08x = 550,340.34 × 237,578.64
  4. Step 4: Simplify right side
    398,807.08x = 130,749,109,514.34
  5. Step 5: Solve for x
    x = 130,749,109,514.34/398,807.08
  6. Step 6: Final answer
    x = 327,850.52

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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.