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Finding the Fourth Proportional to 398,580.84, 549,730.44 and 255,354.12

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Solution

The fourth proportional to 398,580.84, 549,730.44 and 255,354.12 is: 352,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,580.84 : 549,730.44 = 255,354.12 : x
  2. Step 2: Convert to fraction form
    398,580.84/549,730.44 = 255,354.12/x
  3. Step 3: Cross multiply
    398,580.84x = 549,730.44 × 255,354.12
  4. Step 4: Simplify right side
    398,580.84x = 140,375,932,743.41
  5. Step 5: Solve for x
    x = 140,375,932,743.41/398,580.84
  6. Step 6: Final answer
    x = 352,189.36

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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.