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Finding the Fourth Proportional to 339,164.30, 508,818.41 and 128,797.58

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Solution

The fourth proportional to 339,164.30, 508,818.41 and 128,797.58 is: 193,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,164.30 : 508,818.41 = 128,797.58 : x
  2. Step 2: Convert to fraction form
    339,164.30/508,818.41 = 128,797.58/x
  3. Step 3: Cross multiply
    339,164.30x = 508,818.41 × 128,797.58
  4. Step 4: Simplify right side
    339,164.30x = 65,534,579,867.45
  5. Step 5: Solve for x
    x = 65,534,579,867.45/339,164.30
  6. Step 6: Final answer
    x = 193,223.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.