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Finding the Fourth Proportional to 398,601.28, 549,758.73 and 255,374.74

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Solution

The fourth proportional to 398,601.28, 549,758.73 and 255,374.74 is: 352,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601.28 : 549,758.73 = 255,374.74 : x
  2. Step 2: Convert to fraction form
    398,601.28/549,758.73 = 255,374.74/x
  3. Step 3: Cross multiply
    398,601.28x = 549,758.73 × 255,374.74
  4. Step 4: Simplify right side
    398,601.28x = 140,394,492,736.48
  5. Step 5: Solve for x
    x = 140,394,492,736.48/398,601.28
  6. Step 6: Final answer
    x = 352,217.87

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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.