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Finding the Fourth Proportional to 235,454.94, 353,404.38 and 85,839.84

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Solution

The fourth proportional to 235,454.94, 353,404.38 and 85,839.84 is: 128,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,454.94 : 353,404.38 = 85,839.84 : x
  2. Step 2: Convert to fraction form
    235,454.94/353,404.38 = 85,839.84/x
  3. Step 3: Cross multiply
    235,454.94x = 353,404.38 × 85,839.84
  4. Step 4: Simplify right side
    235,454.94x = 30,336,175,434.50
  5. Step 5: Solve for x
    x = 30,336,175,434.50/235,454.94
  6. Step 6: Final answer
    x = 128,840.68

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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.