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Finding the Fourth Proportional to 491,422.74, 737,051.88 and 136,472.64

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Solution

The fourth proportional to 491,422.74, 737,051.88 and 136,472.64 is: 204,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,422.74 : 737,051.88 = 136,472.64 : x
  2. Step 2: Convert to fraction form
    491,422.74/737,051.88 = 136,472.64/x
  3. Step 3: Cross multiply
    491,422.74x = 737,051.88 × 136,472.64
  4. Step 4: Simplify right side
    491,422.74x = 100,587,415,880.56
  5. Step 5: Solve for x
    x = 100,587,415,880.56/491,422.74
  6. Step 6: Final answer
    x = 204,686.12

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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.