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Finding the Fourth Proportional to 398,214.27, 549,535.46 and 219,366.27

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Solution

The fourth proportional to 398,214.27, 549,535.46 and 219,366.27 is: 302,725.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,214.27 : 549,535.46 = 219,366.27 : x
  2. Step 2: Convert to fraction form
    398,214.27/549,535.46 = 219,366.27/x
  3. Step 3: Cross multiply
    398,214.27x = 549,535.46 × 219,366.27
  4. Step 4: Simplify right side
    398,214.27x = 120,549,542,996.10
  5. Step 5: Solve for x
    x = 120,549,542,996.10/398,214.27
  6. Step 6: Final answer
    x = 302,725.32

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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.