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Finding the Fourth Proportional to 354,348, 531,523.92 and 91,692

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Solution

The fourth proportional to 354,348, 531,523.92 and 91,692 is: 137,538.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,348 : 531,523.92 = 91,692 : x
  2. Step 2: Convert to fraction form
    354,348/531,523.92 = 91,692/x
  3. Step 3: Cross multiply
    354,348x = 531,523.92 × 91,692
  4. Step 4: Simplify right side
    354,348x = 48,736,491,272.64
  5. Step 5: Solve for x
    x = 48,736,491,272.64/354,348
  6. Step 6: Final answer
    x = 137,538.50

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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.