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Finding the Fourth Proportional to 339,031.80, 508,223.70 and 125,742.60

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Solution

The fourth proportional to 339,031.80, 508,223.70 and 125,742.60 is: 188,493.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,031.80 : 508,223.70 = 125,742.60 : x
  2. Step 2: Convert to fraction form
    339,031.80/508,223.70 = 125,742.60/x
  3. Step 3: Cross multiply
    339,031.80x = 508,223.70 × 125,742.60
  4. Step 4: Simplify right side
    339,031.80x = 63,905,369,419.62
  5. Step 5: Solve for x
    x = 63,905,369,419.62/339,031.80
  6. Step 6: Final answer
    x = 188,493.73

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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.