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Finding the Fourth Proportional to 354,349, 531,525.42 and 91,693

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Solution

The fourth proportional to 354,349, 531,525.42 and 91,693 is: 137,540.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,349 : 531,525.42 = 91,693 : x
  2. Step 2: Convert to fraction form
    354,349/531,525.42 = 91,693/x
  3. Step 3: Cross multiply
    354,349x = 531,525.42 × 91,693
  4. Step 4: Simplify right side
    354,349x = 48,737,160,336.06
  5. Step 5: Solve for x
    x = 48,737,160,336.06/354,349
  6. Step 6: Final answer
    x = 137,540.00

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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.