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Finding the Fourth Proportional to 302,912.60, 454,363.74 and 89,679.59

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Solution

The fourth proportional to 302,912.60, 454,363.74 and 89,679.59 is: 134,517.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,912.60 : 454,363.74 = 89,679.59 : x
  2. Step 2: Convert to fraction form
    302,912.60/454,363.74 = 89,679.59/x
  3. Step 3: Cross multiply
    302,912.60x = 454,363.74 × 89,679.59
  4. Step 4: Simplify right side
    302,912.60x = 40,747,153,914.07
  5. Step 5: Solve for x
    x = 40,747,153,914.07/302,912.60
  6. Step 6: Final answer
    x = 134,517.86

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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.