Home / 398,974.08-549,941.05-269,865.47

Finding the Fourth Proportional to 398,974.08, 549,941.05 and 269,865.47

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Solution

The fourth proportional to 398,974.08, 549,941.05 and 269,865.47 is: 371,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,974.08 : 549,941.05 = 269,865.47 : x
  2. Step 2: Convert to fraction form
    398,974.08/549,941.05 = 269,865.47/x
  3. Step 3: Cross multiply
    398,974.08x = 549,941.05 × 269,865.47
  4. Step 4: Simplify right side
    398,974.08x = 148,410,099,930.54
  5. Step 5: Solve for x
    x = 148,410,099,930.54/398,974.08
  6. Step 6: Final answer
    x = 371,979.30

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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.