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Finding the Fourth Proportional to 491,615.40, 737,423.58 and 136,629.48

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Solution

The fourth proportional to 491,615.40, 737,423.58 and 136,629.48 is: 204,944.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,615.40 : 737,423.58 = 136,629.48 : x
  2. Step 2: Convert to fraction form
    491,615.40/737,423.58 = 136,629.48/x
  3. Step 3: Cross multiply
    491,615.40x = 737,423.58 × 136,629.48
  4. Step 4: Simplify right side
    491,615.40x = 100,753,800,275.14
  5. Step 5: Solve for x
    x = 100,753,800,275.14/491,615.40
  6. Step 6: Final answer
    x = 204,944.35

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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.