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Finding the Fourth Proportional to 398,110.82, 549,758.05 and 252,964.41

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Solution

The fourth proportional to 398,110.82, 549,758.05 and 252,964.41 is: 349,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,110.82 : 549,758.05 = 252,964.41 : x
  2. Step 2: Convert to fraction form
    398,110.82/549,758.05 = 252,964.41/x
  3. Step 3: Cross multiply
    398,110.82x = 549,758.05 × 252,964.41
  4. Step 4: Simplify right side
    398,110.82x = 139,069,218,067.00
  5. Step 5: Solve for x
    x = 139,069,218,067.00/398,110.82
  6. Step 6: Final answer
    x = 349,322.88

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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.