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Finding the Fourth Proportional to 395,422.70, 545,680.62 and 214,130.48

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Solution

The fourth proportional to 395,422.70, 545,680.62 and 214,130.48 is: 295,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,422.70 : 545,680.62 = 214,130.48 : x
  2. Step 2: Convert to fraction form
    395,422.70/545,680.62 = 214,130.48/x
  3. Step 3: Cross multiply
    395,422.70x = 545,680.62 × 214,130.48
  4. Step 4: Simplify right side
    395,422.70x = 116,846,853,087.30
  5. Step 5: Solve for x
    x = 116,846,853,087.30/395,422.70
  6. Step 6: Final answer
    x = 295,498.60

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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.