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Finding the Fourth Proportional to 491,421.53, 737,132.60 and 136,435.59

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Solution

The fourth proportional to 491,421.53, 737,132.60 and 136,435.59 is: 204,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,421.53 : 737,132.60 = 136,435.59 : x
  2. Step 2: Convert to fraction form
    491,421.53/737,132.60 = 136,435.59/x
  3. Step 3: Cross multiply
    491,421.53x = 737,132.60 × 136,435.59
  4. Step 4: Simplify right side
    491,421.53x = 100,571,121,530.32
  5. Step 5: Solve for x
    x = 100,571,121,530.32/491,421.53
  6. Step 6: Final answer
    x = 204,653.47

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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.