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Finding the Fourth Proportional to 395,427.17, 545,690.01 and 214,139.39

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Solution

The fourth proportional to 395,427.17, 545,690.01 and 214,139.39 is: 295,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,427.17 : 545,690.01 = 214,139.39 : x
  2. Step 2: Convert to fraction form
    395,427.17/545,690.01 = 214,139.39/x
  3. Step 3: Cross multiply
    395,427.17x = 545,690.01 × 214,139.39
  4. Step 4: Simplify right side
    395,427.17x = 116,853,723,142.04
  5. Step 5: Solve for x
    x = 116,853,723,142.04/395,427.17
  6. Step 6: Final answer
    x = 295,512.63

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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.