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Finding the Fourth Proportional to 395,308.76, 545,522.08 and 214,015.88

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Solution

The fourth proportional to 395,308.76, 545,522.08 and 214,015.88 is: 295,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,308.76 : 545,522.08 = 214,015.88 : x
  2. Step 2: Convert to fraction form
    395,308.76/545,522.08 = 214,015.88/x
  3. Step 3: Cross multiply
    395,308.76x = 545,522.08 × 214,015.88
  4. Step 4: Simplify right side
    395,308.76x = 116,750,388,010.63
  5. Step 5: Solve for x
    x = 116,750,388,010.63/395,308.76
  6. Step 6: Final answer
    x = 295,339.74

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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.