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Finding the Fourth Proportional to 398,555.52, 549,986.28 and 226,451.04

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Solution

The fourth proportional to 398,555.52, 549,986.28 and 226,451.04 is: 312,490.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,555.52 : 549,986.28 = 226,451.04 : x
  2. Step 2: Convert to fraction form
    398,555.52/549,986.28 = 226,451.04/x
  3. Step 3: Cross multiply
    398,555.52x = 549,986.28 × 226,451.04
  4. Step 4: Simplify right side
    398,555.52x = 124,544,965,091.73
  5. Step 5: Solve for x
    x = 124,544,965,091.73/398,555.52
  6. Step 6: Final answer
    x = 312,490.88

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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.