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Finding the Fourth Proportional to 398,771.26, 549,993.18 and 255,544.62

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Solution

The fourth proportional to 398,771.26, 549,993.18 and 255,544.62 is: 352,452.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,771.26 : 549,993.18 = 255,544.62 : x
  2. Step 2: Convert to fraction form
    398,771.26/549,993.18 = 255,544.62/x
  3. Step 3: Cross multiply
    398,771.26x = 549,993.18 × 255,544.62
  4. Step 4: Simplify right side
    398,771.26x = 140,547,798,185.69
  5. Step 5: Solve for x
    x = 140,547,798,185.69/398,771.26
  6. Step 6: Final answer
    x = 352,452.18

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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.