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Finding the Fourth Proportional to 303,087.78, 454,499.92 and 86,898.90

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Solution

The fourth proportional to 303,087.78, 454,499.92 and 86,898.90 is: 130,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,087.78 : 454,499.92 = 86,898.90 : x
  2. Step 2: Convert to fraction form
    303,087.78/454,499.92 = 86,898.90/x
  3. Step 3: Cross multiply
    303,087.78x = 454,499.92 × 86,898.90
  4. Step 4: Simplify right side
    303,087.78x = 39,495,542,041.99
  5. Step 5: Solve for x
    x = 39,495,542,041.99/303,087.78
  6. Step 6: Final answer
    x = 130,310.57

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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.