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Finding the Fourth Proportional to 354,350, 531,526.92 and 91,694

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Solution

The fourth proportional to 354,350, 531,526.92 and 91,694 is: 137,541.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,350 : 531,526.92 = 91,694 : x
  2. Step 2: Convert to fraction form
    354,350/531,526.92 = 91,694/x
  3. Step 3: Cross multiply
    354,350x = 531,526.92 × 91,694
  4. Step 4: Simplify right side
    354,350x = 48,737,829,402.48
  5. Step 5: Solve for x
    x = 48,737,829,402.48/354,350
  6. Step 6: Final answer
    x = 137,541.50

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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.