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Finding the Fourth Proportional to 398,219.27, 549,542.36 and 219,371.27

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Solution

The fourth proportional to 398,219.27, 549,542.36 and 219,371.27 is: 302,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,219.27 : 549,542.36 = 219,371.27 : x
  2. Step 2: Convert to fraction form
    398,219.27/549,542.36 = 219,371.27/x
  3. Step 3: Cross multiply
    398,219.27x = 549,542.36 × 219,371.27
  4. Step 4: Simplify right side
    398,219.27x = 120,553,804,335.14
  5. Step 5: Solve for x
    x = 120,553,804,335.14/398,219.27
  6. Step 6: Final answer
    x = 302,732.22

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1.5x scale

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.